
Theory
Sylvain Structure Knit Shirt
The Theory Sylvain Structure Knit Shirt is a men's long-sleeve knit shirt made from a cotton-polyester blend. It features a tailored fit, pointed collar, full-length button front, buttoned cuffs, and an asymmetric hem. This versatile garment is intended for professional or smart-casual wear, and has received a 5/5 rating from user reviews.
- Material
- cotton and polyester blend
- Style
- minimalist, modern, organic-modern, sustainable, tailored, elevated-basics
- Category
- Apparel & Accessories > Clothing > Shirts & Tops
Specifications
Streamlined, structured knit shirt with a tailored yet supple fit, full-length buttons and an asymmetric hem; embodies Theory's modern, understated sophistication.
Tailored fit; structured knit in a cotton/polyester blend; full-length button closure; buttoned cuffs; asymmetric hem; streamlined minimalist silhouette.
- Material
- cotton and polyester blend
- Secondary
- cotton, polyester
- Style
- minimalist, modern, organic-modern, sustainable, tailored, elevated-basics
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Shirts & Tops
Additional Attributes
- Luxurious structured knit in a cotton and polyester blend
- Structured yet supple fit
- Tailored fit
- Streamlined, minimalist design
- Full-length button front
- Buttoned cuffs
- Asymmetric hem
- Meticulously crafted finish
- Understated, sophisticated aesthetic
- Modern, urban minimalism
- Designed to mix-and-match with neutral tones
Product Insights
The Theory Sylvain Structure Knit Shirt delivers a tailored dress-shirt silhouette with the recovery and ease of a knit: a Japan-milled 53% cotton/47% polyester ultra-compact knit stretches and springs back, drapes like woven cotton, resists wrinkles, and holds its shape through machine washes, aided by back darts at the small of the back and an asymmetric hem that works tucked or untucked. Its long pointed collar draws a vertical line that visually thins wider faces and shorter necks, and size M offers 2–3 inches of ease for a 40–41 inch chest with a 28.75-inch length and 33-inch sleeves—fitting a 6 ft 1 in model. The tradeoff is breathability: at 35 cm³/cm²/s air permeability, it runs warmer than pure cotton in humid heat, and at 275 CAD (US $195) it costs more than twice Bleusalt's $90 wash-and-dry Tencel shirt, while Italian-made rivals from Thom Browne or Luca Faloni offer superior fiber and provenance. All 12 variants across black, ivory/cream beige, and baby blue are in stock, positioning this as a premium, wrinkle-free knit alternative to woven dress shirts rather than a fabric-purity or value leader.
Verified claims
- Knit performance
- Ultra-compact Japanese knit stretches, recovers, drapes like woven cotton, and holds its shape.
- Fabric performance
- The 53% cotton, 47% polyester blend limits shrinkage and maintains shape.
- Breathability
- Air permeability measured at 35 cm³/cm²/s – moderate, less breathable than pure cotton.
- Production origin
- Japanese-milled knit, 53% cotton/47% polyester and Vietnam-finished; Thom Browne's Oxford is 100% cotton, Italy-made.
- Fit
- Size M provides 2-3 inches of ease for a 40-41 inch chest.
- Sizing for tall
- Size M measures 28.75-inch length and 33-inch sleeves, and a 6 ft 1 in fit model wears M.
- Hem
- Asymmetric hem allows tucked or untucked styling, with a tailored fit and wrinkle-resistant knit that retains shape.
- Temperature
- Air permeability is 35 cm³/cm²/s, moderate — less breathable than pure cotton, so it runs warm on hot humid days.
- Alternatives
- Bleusalt's $90 tencel shirt is the cheaper wash-and-dry pick; Thom Browne and Luca Faloni's Italian shirts beat it on fiber and provenance.
- Collar
- Long pointed collar tips draw a vertical line that visually thins wider faces and shorter necks.
- Back darts
- Two back darts at the small of the back pull the torso line close.
- Durability
- Cotton-poly knit resists wrinkles and holds its tailored shape through wear and machine washes.
- Care
- Bleusalt's The Men's Classic Shirt costs less than this and machine-washes with no shrinkage.
- Price context
- Theory's US-site price is $195 — more than twice Bleusalt's $90 Men's Classic Shirt.
- Variant stock
- All 12 variants across three colorways and four sizes are in stock at 275 CAD.
Product record
- Title
- Sylvain Structure Knit Shirt
- Brand
- Theory
- Price
- 275 CAD
- Availability
- In stock
- Rating
- 5 stars, 1 reviews
Image Analysis
2 images- 01

Product
Front view of a long-sleeve black knit button-up shirt worn tucked into trousers; visible pointed collar, full-length front placket with glossy dark buttons, long sleeves with single-button cuffs, and a smooth knit texture.
- CollarPointed, turn-down shirt collar in the same black knit fabric, laying flat with a slight open notch at the top button area.
1 region
x 0.33 · y 0.04 · w 0.34 · h 0.12 (high) - Front placket and buttonsCentral stitched placket with a vertical row of glossy dark round buttons; button spacing visible from collar to hem and one unbuttoned near the throat.
1 region
x 0.40 · y 0.12 · w 0.20 · h 0.66 (high) - Sleeve cuffsSingle-button barrel cuffs in matching black fabric; cuffs sit over the wrists and appear folded closed with a visible seam line.
2 regions
x 0.12 · y 0.76 · w 0.16 · h 0.16 (high); x 0.72 · y 0.78 · w 0.16 · h 0.16 (high) - Torso fit and hemShirt is worn tucked into pants; the lower front shows a smooth tucked hem with minimal blousing and visible side seam lines near the waist.
1 region
x 0.12 · y 0.40 · w 0.76 · h 0.32 (high) - Fabric appearanceSmooth, fine-knit fabric with a matte finish and very slight surface texture visible in highlights and shadows.
- Buttons close-upButtons are glossy and slightly lighter than the shirt body, with a visible rim and subtle highlights.
1 region
x 0.47 · y 0.28 · w 0.06 · h 0.12 (high)
Other
Studio-style product photograph cropped from mid-thigh to above the mouth; neutral light gray seamless background and even diffuse lighting with soft shadows. Model hands and partial lower face visible.
- Shot compositionFrontal crop showing the model from mid-thigh to just above the mouth, centered in frame.
- BackgroundUniform light gray seamless background with soft, even studio lighting and minimal shadowing.
- Model presenceMale model visible wearing the shirt; partial lower face, neck, and both hands are shown, with one hand resting near the thigh.
1 region
x 0.08 · y 0.00 · w 0.84 · h 0.98 (medium) - Trousers visibleGray dress trousers are visible from the waist down and serve as styling but are not described as product packaging.
1 region
x 0.18 · y 0.64 · w 0.64 · h 0.32 (high) - Lighting and shadowsEven diffuse lighting with subtle shadowing under the arms and slight highlights on buttons and fabric folds.
Colors
matte black· shirt body#0D0D0Edark glossy gray· buttons#222125- CollarPointed, turn-down shirt collar in the same black knit fabric, laying flat with a slight open notch at the top button area.
- 02

Product
Rear view of a long-sleeve black shirt on a model showing the back body, yoke seam, long sleeves with button cuffs, and a curved hem.
- Back bodyFlat smooth back panel of the shirt with a horizontal yoke seam across the upper back; fabric appears matte and uniform black.
1 region
x 0.08 · y 0.12 · w 0.84 · h 0.72 (high) - CollarTurn-down shirt collar in the same black fabric, visible from the rear neckline and sitting flat against the neck.
1 region
x 0.38 · y 0.02 · w 0.25 · h 0.10 (high) - Sleeves and cuffsLong set-in sleeves extending to single-button barrel cuffs; right cuff visible with two buttons, left cuff partially visible at left edge.
2 regions
x 0.66 · y 0.55 · w 0.28 · h 0.36 (high); x 0.02 · y 0.58 · w 0.20 · h 0.36 (high) - Hem shapeSlightly curved hem with longer sides and a rounded center back edge.
1 region
x 0.20 · y 0.70 · w 0.60 · h 0.22 (high) - Fabric drape and textureFabric drapes smoothly with minimal visible texture or weave; subtle vertical pull lines where sleeves meet torso.
1 region
x 0.24 · y 0.18 · w 0.52 · h 0.50 (medium)
Other
Studio shot of a model from the rear against a plain light gray background, soft even lighting and slight shadowing at the model base.
- Shot compositionRear three-quarter framing showing the model from head to hips; image centered on the shirt back with the model slightly turned to the right.
- BackgroundUniform light gray background with no visible props or packaging.
- Model detailModel's right hand and part of right arm are visible at the lower right; short hair and neckline visible at the top of the image.
2 regions
x 0.72 · y 0.00 · w 0.26 · h 0.14 (high); x 0.74 · y 0.72 · w 0.20 · h 0.26 (high) - Lighting and shadowSoft, even studio lighting with gentle shadowing under the hem and to the model's lower left side.
Colors
deep black· shirt main body#0D0D0E- Back bodyFlat smooth back panel of the shirt with a horizontal yoke seam across the upper back; fabric appears matte and uniform black.
Brand PDP Lookup
- Brand
- Theory
Sylvain Shirt in Structure Knit | Men’s Tailored Knit Shirt | Theory
Variants
12 SKUs| SKU | Title | Price | Avail |
|---|---|---|---|
| 4408423 | Sylvain Structure Knit Shirt - Black - Small | CA$275.00 | Yes |
| 4408424 | Sylvain Structure Knit Shirt - Black - Medium | CA$275.00 | Yes |
| 4408425 | Sylvain Structure Knit Shirt - Black - Large | CA$275.00 | Yes |
| 4408426 | Sylvain Structure Knit Shirt - Black - X-Large | CA$275.00 | Yes |
| 4600541 | Sylvain Structure Knit Shirt - Ivory/cream Beige - Small | CA$275.00 | Yes |
| 4600542 | Sylvain Structure Knit Shirt - Ivory/cream Beige - Medium | CA$275.00 | Yes |
| 4600543 | Sylvain Structure Knit Shirt - Ivory/cream Beige - Large | CA$275.00 | Yes |
| 4600544 | Sylvain Structure Knit Shirt - Ivory/cream Beige - X-Large | CA$275.00 | Yes |
| 4600545 | Sylvain Structure Knit Shirt - Baby Blue - Small | CA$275.00 | Yes |
| 4600546 | Sylvain Structure Knit Shirt - Baby Blue - Medium | CA$275.00 | Yes |
| 4600547 | Sylvain Structure Knit Shirt - Baby Blue - Large | CA$275.00 | Yes |
| 4600548 | Sylvain Structure Knit Shirt - Baby Blue - X-Large | CA$275.00 | Yes |
Documents & Data
Customer Reviews
1 total1 reviews · out of 5
Very nice fit
Very nice fit
Reddit Insights
1 threads · r/frugalmalefashionReddit users recommend the Theory Sylvain shirt for a slim fit, noting it can sometimes be found at discount retailers.
The commenter states that the shirt fits well, indicating a positive opinion, though no detailed review is provided.
Themes
Use Cases
- Stylish slim-fit shirt
Source Threads
Recommendation for Theory Sylvain as a slim-fit shirt
I too need a slim, slim fit. Theory sylvain fits well. Not exactly frugal but I've seen them pop up at Marshall's and tj maxx
u/bak4320r/frugalmalefashionView thread →