Studio D'artisan Men's Heavyweight 100% Cotton Waffle-Knit Thermal Henley Long-Sleeve T-Shirt, Three-Button Placket, Four-Needle Flatseams, Curved Overlock-Finished Hem, Made in Japan (SDA 9937 Emerald Green)
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Studio D'artisan Men's Heavyweight 100% Cotton Waffle-Knit Thermal Henley Long-Sleeve T-Shirt, Three-Button Placket, Four-Needle Flatseams, Curved Overlock-Finished Hem, Made in Japan (SDA 9937)
Studio D'artisan
See available colors here
This men's heavyweight thermal long-sleeve T-shirt is made in Japan by Studio D'artisan. Its design is based on classic thermal shirts and features a three-button Henley neckline. Rather than using the thin, soft fabric commonly associated with thermal underwear, this model is made from the brand's original densely knitted 100% cotton waffle fabric, giving it substantial thickness and weight, a firm, full-bodied hand, and supple stretch. The shirt incorporates classic thermal-wear details such as a rib-knit binder neckline, a double-layer Henley placket, set-in sleeves, extended double-layer fine-rib cuffs, a gently curved hem with an unfolded cut edge finished with overlock stitching, and Union Special four-needle flatseam construction. Together, these features retain the authentic, practical character of traditional thermal wear while giving the shirt enough substance and presence to be worn as a standalone casual top. Its slim but not excessively close-fitting silhouette follows the body without emphasizing its contours too strongly, allowing the shirt to fit naturally into American casual outfits as either a standalone top or a layer beneath jackets and coats in fall and winter.
Size and Fit Guide:
Gender: Men.
The T-shirt has an overall slim fit, with side seams that curve slightly inward from the underarm area toward the waist. This shapes the body gently through the torso instead of creating the straight sides of a box-shaped cut. It follows the body's contours without emphasizing them too strongly and does not have the extremely close, body-hugging fit associated with thermal underwear.
The heavyweight thermal fabric combines substantial body with a high degree of stretch. The measurements below therefore represent the garment in its laid-flat state and should be treated as reference dimensions. During wear, the knit expands and relaxes in response to body shape and movement, so its stretch should be considered alongside the listed measurements when assessing fit.
The neckline is finished in a three-button Henley configuration, while set-in sleeves establish clearly defined shoulder and armhole seams. The lower body is finished without a constricting rib-knit waistband, and the hem curves gently upward from the center of both the front and back toward the sides. These proportions allow the shirt to be worn as a main long-sleeve top or as a layer beneath outerwear while retaining a slim overall outline.
Because fit may vary depending on body type and personal preference, please use the actual garment measurements below as your primary reference while also allowing for the stretch of the thermal knit. For the most useful comparison, please measure a similar thermal T-shirt that fits you well and compare its measurements with those listed below. All measurements are taken by hand, so slight variations may occur between individual garments and depending on the measuring method.
Our model wears Tagged Size M. He is 175 cm / approximately 5'9" tall, weighs 59 kg / approximately 130 lbs, and has a 91 cm / approximately 36" chest. For reference, he normally wears a US/EU size S/36.
The following measurements show the garment itself, not your body measurements.
Please compare them with a similar thermal T-shirt from your wardrobe to get a better sense of the fit.
In inches
Tagged Size M
Width: 18.5" / Length: 23.6"
Sleeve: 30.3" (22.8") / Shoulder: 15.0"
Tagged Size L
Width: 19.3" / Length: 24.8"
Sleeve: 31.1" (23.2") / Shoulder: 15.7"
Tagged Size XL
Width: 20.1" / Length: 25.6"
Sleeve: 31.9" (23.6") / Shoulder: 16.5"
Tagged Size 2XL (XXL)
Width: 20.9" / Length: 26.4"
Sleeve: 33.1" (24.0") / Shoulder: 17.7"
In centimeters
Tagged Size M
Width: 47cm / Length: 60cm
Sleeve: 77cm (58cm) / Shoulder: 38cm
Tagged Size L
Width: 49cm / Length: 63cm
Sleeve: 79cm (59cm) / Shoulder: 40cm
Tagged Size XL
Width: 51cm / Length: 65cm
Sleeve: 81cm (60cm) / Shoulder: 42cm
Tagged Size 2XL (XXL)
Width: 53cm / Length: 67cm
Sleeve: 84cm (61cm) / Shoulder: 45cm
[How We Measure the Actual Garment]
Width (Chest Width / Half Chest): Lay the garment flat and measure straight across from side to side, approximately 3cm (about 1.2 in.) below the underarms.
Length (Body Length): Measured from the base of the back collar, where the collar joins the body, straight down to the bottom of the hem.
Sleeve (Center-Back Sleeve Length): The first sleeve measurement is taken from the center back at the base of the collar seam, across the shoulder, and down to the end of the cuff.
Sleeve in Parentheses (Sleeve Length from Shoulder Seam): The sleeve measurement shown in parentheses is taken from the top of the shoulder seam straight down to the end of the cuff.
Shoulder (Shoulder Width): Measured straight across the back from the outer edge of one shoulder seam to the outer edge of the other.
Made in Japan.
- Brand new with tags, in unused condition.
- All measurements are taken by hand with the garment laid flat, using a measuring tape.
- Please note that slight variations in measurements may occur due to individual garment differences and the measuring method.
- Actual color may vary slightly from the photos due to lighting conditions and individual screen settings.
100% Cotton Waffle-Knit Thermal Fabric
The body is made from Studio D'artisan's original heavyweight thermal fabric, knitted from 100% cotton. The outer face has a clearly defined waffle texture, with raised sections and recessed areas forming a three-dimensional knitted surface. The reverse also has an uneven knitted texture, although the relief is less pronounced than on the exterior.
The depth of this knitted structure creates spaces that hold air within the fabric. These air spaces contribute to the insulating effect of the thermal knit and help retain warmth. The fabric's thermal character is therefore connected to the physical depth and texture of its knitted construction.
The textured reverse also limits the amount of fabric in direct contact with the skin. Its raised and recessed areas keep the inner surface from resting against the body as one continuous flat plane, helping reduce the tendency of the fabric to cling when the wearer perspires.
Densely Knitted Heavyweight Structure, Firm Body, and Supple Stretch
The fabric is knitted with a higher stitch density than a typical thermal material. This closely packed knitted structure gives it substantial thickness and weight, together with a firm, full-bodied hand.
The fabric also retains the stretch and suppleness characteristic of thermal knit. Its firmness describes the amount of body in the fabric, while its flexibility allows it to bend and extend with movement. The result is a substantial material that can follow the wearer without relying on the thin, soft construction commonly associated with thermal underwear.
The thickness, weight, and firm body of the fabric make it suitable for use as a main casual T-shirt. At the same time, its thermal structure and stretch remain useful when it is worn beneath a jacket or coat. This combination gives the material its heavy-duty character while preserving the flexibility needed for both standalone wear and fall-and-winter layering.
One-Wash Garment Finish
The T-shirt is washed once in its completed garment form as part of the finishing process. Washing the assembled garment allows the freshly knitted fabric to settle and brings out both the three-dimensional waffle texture and the natural character of the cotton.
Because this initial wash takes place before the product is offered for sale, some of the initial shrinkage has already occurred compared with an unwashed garment. The finish does not eliminate the possibility of later dimensional changes: the 100% cotton thermal knit may still stretch, contract, or otherwise change in size through wear, washing, and drying.
Three-Button Henley Neck with Rib-Knit Binding and Double-Layer Placket
The neckline is based on a classic crew-neck shape with a front opening extending downward from the neck toward the upper chest, creating a three-button Henley configuration. A separate rib-knit binding wraps around the cut edge of the thermal body fabric at the neckline, covering the edge from both the exterior and interior sides.
The cut neckline edge is held between the folded portions of the rib knit, and two rows of stitching secure the binding in place. This construction encloses and reinforces the body edge from both sides, providing support around the neckline and helping limit stretching out, waviness, and distortion caused by repeated wear and removal.
The front opening is constructed with a double-layer placket for added structure and reinforcement. Three two-hole buttons are arranged vertically along the placket, each featuring a decorative pentagonal engraving. The layered placket provides a firmer base for the button and buttonhole areas while integrating the front opening into the substantial thermal body fabric.
When all three buttons are fastened, the neckline remains relatively closed and maintains a clean, compact shape. Unfastening the upper buttons opens the neckline and allows the amount of opening to be adjusted according to preference.
Set-In Sleeve Construction
The sleeves are attached using a conventional set-in construction. Each sleeve has a shaped sleeve cap that follows the shoulder area and is sewn into the corresponding armhole in the body.
This creates a distinct junction between the shoulder and sleeve, with clearly defined shoulder and armhole seams. The arrangement gives the upper body the straightforward, neatly outlined construction associated with a classic long-sleeve T-shirt.
Extended Double-Layer Fine-Rib Knit Cuffs
The cuffs use a finer rib-knit structure with a different surface texture from the rib knit used at the neckline. Their narrower rib pattern gives them a visibly different surface from the neckline binding.
Each cuff is formed by folding the rib knit back on itself to create a double layer, then sewing it to the end of the thermal sleeve. The cuff fabric has greater stretch than the body fabric, allowing the opening to conform around the wrist.
This closer wrist opening helps limit the entry of cold air through the sleeve end. The cuffs are also comparatively long, covering a broader area around the wrists and creating the extended rib-knit sleeve ends characteristic of classic thermal shirts.
Curved Hem with an Unfolded, Overlocked Edge
The lower edge is finished directly with overlock stitching. The cut fabric edge is left unfolded, with the overlock threads wrapping around it; it is not turned under to form a conventional folded T-shirt hem or joined to a separate rib-knit waistband.
Although the edge is not folded, it is finished with stitching rather than left completely untreated. The overlock finish follows the cut outline of the thermal fabric and defines the lower edge without adding a turned-under hem allowance.
Both the front and back hem lines form gentle curves, sitting lower at their centers and rising gradually toward the side seams. When the shirt is worn untucked, these curved edges follow the body's outline and create a softly rounded lower profile instead of a straight horizontal line.
Union Special Four-Needle Flatseam Construction
The major garment components are joined with flatseams sewn on a Union Special four-needle flatseamer. This construction keeps the fabric junctions comparatively flat and limits the raised seam allowances and localized thickness that can occur on the inside of conventionally assembled seams.
The treatment is used at major joining areas such as the armholes, shoulders, sleeves, and sides. These are places where the edges of substantial thermal fabric meet, so controlling the seam profile helps prevent unnecessary ridges and bulky transitions between the panels.
Keeping these junctions relatively flat reduces the prominence of seams against the body. This allows the shirt to retain the thickness of its heavyweight thermal fabric while reducing the distracting bulk or rubbing that raised seam allowances can create.
Visible Flatseam Stitching
The flatseam stitching is also visible on the outside of the shirt. It follows the component junctions and outlines construction areas such as the armholes, sleeves, and side seams, making the relationship between the garment panels visible from the exterior.
On the otherwise plain design, this stitching provides a restrained visual accent. The appearance comes from the working seams that join the garment, so the visible stitchwork expresses the shirt's construction as well as contributing to its overall appearance.
Made in Japan
Studio D'artisan model 9937 is made in Japan. Its three-button Henley neckline combines rib-knit binding with a reinforced double-layer front placket, while the extended double-layer cuffs provide a defined finish at the wrists. Four-needle flatseams control bulk between the heavyweight panels, and the curved, overlocked hem leaves the lower body free of a rib-knit waistband.
Together with the brand's substantial yet supple cotton thermal fabric, these classic thermal-shirt details give the garment the structure for standalone casual wear and the flexibility for use as a layer beneath outerwear.
Care Instructions
Machine wash on a gentle cycle at a maximum water temperature of 40°C (104°F).
Do not use chlorine bleach or oxygen bleach.
Iron with a pressing cloth at a maximum soleplate temperature of 150°C (302°F).
The garment has been washed once during production. Some further stretching, shrinkage, or other dimensional change may still occur with wear or depending on the washing and drying methods used.
Always follow the care instructions attached to the actual product.
Important Notes
- Our inventory is shared among our physical retail store and multiple online stores, so inventory changes may not always be reflected immediately on each website.
- Even after an order has been placed, an item may occasionally be sold out due to the timing of simultaneous purchases. We sincerely appreciate your understanding.
- All measurements are taken manually with the garment laid flat.
- Because individual garments and measuring methods may vary, slight measurement differences may occur.
- The actual color of the product may appear slightly different from the photographs depending on lighting conditions and the settings of your monitor or display.
Studio D'artisan
See available colors here
This men's heavyweight thermal long-sleeve T-shirt is made in Japan by Studio D'artisan. Its design is based on classic thermal shirts and features a three-button Henley neckline. Rather than using the thin, soft fabric commonly associated with thermal underwear, this model is made from the brand's original densely knitted 100% cotton waffle fabric, giving it substantial thickness and weight, a firm, full-bodied hand, and supple stretch. The shirt incorporates classic thermal-wear details such as a rib-knit binder neckline, a double-layer Henley placket, set-in sleeves, extended double-layer fine-rib cuffs, a gently curved hem with an unfolded cut edge finished with overlock stitching, and Union Special four-needle flatseam construction. Together, these features retain the authentic, practical character of traditional thermal wear while giving the shirt enough substance and presence to be worn as a standalone casual top. Its slim but not excessively close-fitting silhouette follows the body without emphasizing its contours too strongly, allowing the shirt to fit naturally into American casual outfits as either a standalone top or a layer beneath jackets and coats in fall and winter.
Size and Fit Guide:
Gender: Men.
The T-shirt has an overall slim fit, with side seams that curve slightly inward from the underarm area toward the waist. This shapes the body gently through the torso instead of creating the straight sides of a box-shaped cut. It follows the body's contours without emphasizing them too strongly and does not have the extremely close, body-hugging fit associated with thermal underwear.
The heavyweight thermal fabric combines substantial body with a high degree of stretch. The measurements below therefore represent the garment in its laid-flat state and should be treated as reference dimensions. During wear, the knit expands and relaxes in response to body shape and movement, so its stretch should be considered alongside the listed measurements when assessing fit.
The neckline is finished in a three-button Henley configuration, while set-in sleeves establish clearly defined shoulder and armhole seams. The lower body is finished without a constricting rib-knit waistband, and the hem curves gently upward from the center of both the front and back toward the sides. These proportions allow the shirt to be worn as a main long-sleeve top or as a layer beneath outerwear while retaining a slim overall outline.
Because fit may vary depending on body type and personal preference, please use the actual garment measurements below as your primary reference while also allowing for the stretch of the thermal knit. For the most useful comparison, please measure a similar thermal T-shirt that fits you well and compare its measurements with those listed below. All measurements are taken by hand, so slight variations may occur between individual garments and depending on the measuring method.
Our model wears Tagged Size M. He is 175 cm / approximately 5'9" tall, weighs 59 kg / approximately 130 lbs, and has a 91 cm / approximately 36" chest. For reference, he normally wears a US/EU size S/36.
The following measurements show the garment itself, not your body measurements.
Please compare them with a similar thermal T-shirt from your wardrobe to get a better sense of the fit.
In inches
Tagged Size M
Width: 18.5" / Length: 23.6"
Sleeve: 30.3" (22.8") / Shoulder: 15.0"
Tagged Size L
Width: 19.3" / Length: 24.8"
Sleeve: 31.1" (23.2") / Shoulder: 15.7"
Tagged Size XL
Width: 20.1" / Length: 25.6"
Sleeve: 31.9" (23.6") / Shoulder: 16.5"
Tagged Size 2XL (XXL)
Width: 20.9" / Length: 26.4"
Sleeve: 33.1" (24.0") / Shoulder: 17.7"
In centimeters
Tagged Size M
Width: 47cm / Length: 60cm
Sleeve: 77cm (58cm) / Shoulder: 38cm
Tagged Size L
Width: 49cm / Length: 63cm
Sleeve: 79cm (59cm) / Shoulder: 40cm
Tagged Size XL
Width: 51cm / Length: 65cm
Sleeve: 81cm (60cm) / Shoulder: 42cm
Tagged Size 2XL (XXL)
Width: 53cm / Length: 67cm
Sleeve: 84cm (61cm) / Shoulder: 45cm
[How We Measure the Actual Garment]
Width (Chest Width / Half Chest): Lay the garment flat and measure straight across from side to side, approximately 3cm (about 1.2 in.) below the underarms.
Length (Body Length): Measured from the base of the back collar, where the collar joins the body, straight down to the bottom of the hem.
Sleeve (Center-Back Sleeve Length): The first sleeve measurement is taken from the center back at the base of the collar seam, across the shoulder, and down to the end of the cuff.
Sleeve in Parentheses (Sleeve Length from Shoulder Seam): The sleeve measurement shown in parentheses is taken from the top of the shoulder seam straight down to the end of the cuff.
Shoulder (Shoulder Width): Measured straight across the back from the outer edge of one shoulder seam to the outer edge of the other.
Made in Japan.
- Brand new with tags, in unused condition.
- All measurements are taken by hand with the garment laid flat, using a measuring tape.
- Please note that slight variations in measurements may occur due to individual garment differences and the measuring method.
- Actual color may vary slightly from the photos due to lighting conditions and individual screen settings.
100% Cotton Waffle-Knit Thermal Fabric
The body is made from Studio D'artisan's original heavyweight thermal fabric, knitted from 100% cotton. The outer face has a clearly defined waffle texture, with raised sections and recessed areas forming a three-dimensional knitted surface. The reverse also has an uneven knitted texture, although the relief is less pronounced than on the exterior.
The depth of this knitted structure creates spaces that hold air within the fabric. These air spaces contribute to the insulating effect of the thermal knit and help retain warmth. The fabric's thermal character is therefore connected to the physical depth and texture of its knitted construction.
The textured reverse also limits the amount of fabric in direct contact with the skin. Its raised and recessed areas keep the inner surface from resting against the body as one continuous flat plane, helping reduce the tendency of the fabric to cling when the wearer perspires.
Densely Knitted Heavyweight Structure, Firm Body, and Supple Stretch
The fabric is knitted with a higher stitch density than a typical thermal material. This closely packed knitted structure gives it substantial thickness and weight, together with a firm, full-bodied hand.
The fabric also retains the stretch and suppleness characteristic of thermal knit. Its firmness describes the amount of body in the fabric, while its flexibility allows it to bend and extend with movement. The result is a substantial material that can follow the wearer without relying on the thin, soft construction commonly associated with thermal underwear.
The thickness, weight, and firm body of the fabric make it suitable for use as a main casual T-shirt. At the same time, its thermal structure and stretch remain useful when it is worn beneath a jacket or coat. This combination gives the material its heavy-duty character while preserving the flexibility needed for both standalone wear and fall-and-winter layering.
One-Wash Garment Finish
The T-shirt is washed once in its completed garment form as part of the finishing process. Washing the assembled garment allows the freshly knitted fabric to settle and brings out both the three-dimensional waffle texture and the natural character of the cotton.
Because this initial wash takes place before the product is offered for sale, some of the initial shrinkage has already occurred compared with an unwashed garment. The finish does not eliminate the possibility of later dimensional changes: the 100% cotton thermal knit may still stretch, contract, or otherwise change in size through wear, washing, and drying.
Three-Button Henley Neck with Rib-Knit Binding and Double-Layer Placket
The neckline is based on a classic crew-neck shape with a front opening extending downward from the neck toward the upper chest, creating a three-button Henley configuration. A separate rib-knit binding wraps around the cut edge of the thermal body fabric at the neckline, covering the edge from both the exterior and interior sides.
The cut neckline edge is held between the folded portions of the rib knit, and two rows of stitching secure the binding in place. This construction encloses and reinforces the body edge from both sides, providing support around the neckline and helping limit stretching out, waviness, and distortion caused by repeated wear and removal.
The front opening is constructed with a double-layer placket for added structure and reinforcement. Three two-hole buttons are arranged vertically along the placket, each featuring a decorative pentagonal engraving. The layered placket provides a firmer base for the button and buttonhole areas while integrating the front opening into the substantial thermal body fabric.
When all three buttons are fastened, the neckline remains relatively closed and maintains a clean, compact shape. Unfastening the upper buttons opens the neckline and allows the amount of opening to be adjusted according to preference.
Set-In Sleeve Construction
The sleeves are attached using a conventional set-in construction. Each sleeve has a shaped sleeve cap that follows the shoulder area and is sewn into the corresponding armhole in the body.
This creates a distinct junction between the shoulder and sleeve, with clearly defined shoulder and armhole seams. The arrangement gives the upper body the straightforward, neatly outlined construction associated with a classic long-sleeve T-shirt.
Extended Double-Layer Fine-Rib Knit Cuffs
The cuffs use a finer rib-knit structure with a different surface texture from the rib knit used at the neckline. Their narrower rib pattern gives them a visibly different surface from the neckline binding.
Each cuff is formed by folding the rib knit back on itself to create a double layer, then sewing it to the end of the thermal sleeve. The cuff fabric has greater stretch than the body fabric, allowing the opening to conform around the wrist.
This closer wrist opening helps limit the entry of cold air through the sleeve end. The cuffs are also comparatively long, covering a broader area around the wrists and creating the extended rib-knit sleeve ends characteristic of classic thermal shirts.
Curved Hem with an Unfolded, Overlocked Edge
The lower edge is finished directly with overlock stitching. The cut fabric edge is left unfolded, with the overlock threads wrapping around it; it is not turned under to form a conventional folded T-shirt hem or joined to a separate rib-knit waistband.
Although the edge is not folded, it is finished with stitching rather than left completely untreated. The overlock finish follows the cut outline of the thermal fabric and defines the lower edge without adding a turned-under hem allowance.
Both the front and back hem lines form gentle curves, sitting lower at their centers and rising gradually toward the side seams. When the shirt is worn untucked, these curved edges follow the body's outline and create a softly rounded lower profile instead of a straight horizontal line.
Union Special Four-Needle Flatseam Construction
The major garment components are joined with flatseams sewn on a Union Special four-needle flatseamer. This construction keeps the fabric junctions comparatively flat and limits the raised seam allowances and localized thickness that can occur on the inside of conventionally assembled seams.
The treatment is used at major joining areas such as the armholes, shoulders, sleeves, and sides. These are places where the edges of substantial thermal fabric meet, so controlling the seam profile helps prevent unnecessary ridges and bulky transitions between the panels.
Keeping these junctions relatively flat reduces the prominence of seams against the body. This allows the shirt to retain the thickness of its heavyweight thermal fabric while reducing the distracting bulk or rubbing that raised seam allowances can create.
Visible Flatseam Stitching
The flatseam stitching is also visible on the outside of the shirt. It follows the component junctions and outlines construction areas such as the armholes, sleeves, and side seams, making the relationship between the garment panels visible from the exterior.
On the otherwise plain design, this stitching provides a restrained visual accent. The appearance comes from the working seams that join the garment, so the visible stitchwork expresses the shirt's construction as well as contributing to its overall appearance.
Made in Japan
Studio D'artisan model 9937 is made in Japan. Its three-button Henley neckline combines rib-knit binding with a reinforced double-layer front placket, while the extended double-layer cuffs provide a defined finish at the wrists. Four-needle flatseams control bulk between the heavyweight panels, and the curved, overlocked hem leaves the lower body free of a rib-knit waistband.
Together with the brand's substantial yet supple cotton thermal fabric, these classic thermal-shirt details give the garment the structure for standalone casual wear and the flexibility for use as a layer beneath outerwear.
Care Instructions
Machine wash on a gentle cycle at a maximum water temperature of 40°C (104°F).
Do not use chlorine bleach or oxygen bleach.
Iron with a pressing cloth at a maximum soleplate temperature of 150°C (302°F).
The garment has been washed once during production. Some further stretching, shrinkage, or other dimensional change may still occur with wear or depending on the washing and drying methods used.
Always follow the care instructions attached to the actual product.
Important Notes
- Our inventory is shared among our physical retail store and multiple online stores, so inventory changes may not always be reflected immediately on each website.
- Even after an order has been placed, an item may occasionally be sold out due to the timing of simultaneous purchases. We sincerely appreciate your understanding.
- All measurements are taken manually with the garment laid flat.
- Because individual garments and measuring methods may vary, slight measurement differences may occur.
- The actual color of the product may appear slightly different from the photographs depending on lighting conditions and the settings of your monitor or display.
