Le 31 x Thomas Mason
Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit
The Le 31 by Simons blue-striped poplin shirt is a men's long-sleeve button-up dress shirt made in Canada from 100% cotton Regent poplin with a white base and vertical light and navy blue stripes. It has a standard fit with a straight waist and shoulders, regular-fit sleeves, a point collar, central button placket, and barrel cuffs, and uses genuine Madagascan mother-of-pearl buttons. It is intended for everyday and business-casual wear; the buttons are delicate, and the garment should not be tumble dried.
- Color
- Blue-Striped
- Material
- 100% cotton weave
- Style
- classic, regular-fit
- Category
- Apparel & Accessories > Clothing > Shirts & Tops
Color
Specifications
Blue-striped cotton poplin shirt with a standard fit, made in Canada with mother-of-pearl buttons.
Standard fit with a straight waist and shoulders, regular-fit sleeves, Regent poplin weave, 100% cotton, striped pattern, mother-of-pearl buttons, made in Canada.
- Color
- Blue-Striped · blue
- Material
- 100% cotton weave
- Style
- classic, regular-fit
- Occasion
- everyday, casual
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Shirts & Tops
Additional Attributes
- standard fit with a straight style at the waist and shoulders
- regular-fit sleeves
- Regent poplin weave
- elegant and striking striped pattern
- contrasting hues accentuate the chromatic combinations
- 100% cotton fabric
- made in Canada
- exclusive Le 31 by Simons collaboration designed in Canada
- genuine Madagascan mother-of-pearl buttons
- button-front shirt
- delicate buttons; garment should not be put in the dryer
Product Insights
Le 31 x Thomas Mason Standard fit is the roomiest Le 31 shirt cut, straight through the waist and shoulders with regular-fit sleeves. Regent poplin is a genuine Thomas Mason cloth woven in Italy, while the shirt itself is cut and sewn in Canada. Genuine Madagascan mother-of-pearl buttons are a premium detail but are explicitly called delicate. The 375 CAD price reflects Italian Thomas Mason cloth, Canadian cut-and-sew and mother-of-pearl buttons. Main tradeoffs are the fixed blue stripe, the roomy standard fit and the delicate buttons.
Verified claims
- fit
- Standard fit is the roomiest Le 31 shirt cut, straight through the waist and shoulders with regular-fit sleeves.
- sizing
- Collar sizes are listed as 145 through 180, meaning 14.5 to 18 inches in half-inch steps.
- variants
- Patterned Blue is the only colourway across all eight sizes.
- size availability
- The full collar ladder from 14.5 to 18 inches is in stock at one price.
- material provenance
- Regent poplin is a genuine Thomas Mason cloth woven in Italy, while the shirt itself is cut and sewn in Canada.
- composition
- 100% cotton poplin.
- fabric weight
- A mid-weight 100% cotton poplin that works year-round rather than a featherweight summer-only cloth.
- hand feel
- Smooth, crisp, slightly lustrous poplin with a clean drape.
- construction
- Point collar, central button placket, barrel cuffs and standard set-in sleeves.
- buttons
- Genuine Madagascan mother-of-pearl buttons are a premium detail but are explicitly called delicate.
- care washing
- Wash inside out in cold water on a delicate cycle; do not bleach.
- care drying
- Do not tumble dry; hang to air dry.
- care ironing
- Iron at medium temperature, with or without steam, working around the buttons.
- care dry cleaning and starch
- Fabric mill guidance advises no dry cleaning and no starch, though Simons lists professional cleaning as an option.
- durability
- Cotton poplin is durable with correct care, but harsh agitation, high heat, bleach and overcrowded storage shorten its life.
- styling
- Blue vertical stripes make it a versatile business-casual shirt that can be worn tucked or under a jacket.
- use cases
- Works for office, smart casual and year-round layering; less ideal if you want a slim, close-fitting silhouette.
- value
- The 375 CAD price reflects Italian Thomas Mason cloth, Canadian cut-and-sew and mother-of-pearl buttons.
- comparison
- Compared with slim or modern Le 31 fits, this Standard fit is roomier through the body and sleeves.
- tradeoffs
- Main tradeoffs are the fixed blue stripe, the roomy standard fit and the delicate buttons.
- comfort
- Cotton poplin and a roomy cut make it comfortable for all-day wear, with shell buttons that feel cool at first.
Product record
- Title
- Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit
- Brand
- Le 31 x Thomas Mason
- Price
- 375 CAD
- Availability
- In stock
Buying Guide
0 comparisons · 3 sourcesUses
Dress Shirt for Formal Wear
This long-sleeve button-up shirt with vertical blue stripes suits formal attire. Worn tucked into trousers and styled with a tie, it fits office or formal settings.[2]
Gentle care to protect the shirt's delicate buttons
Simons notes that the buttons on this poplin shirt are delicate and recommends not putting the garment in the dryer. Reported care for this shirt calls for a cold, delicate wash inside out, followed by hang drying. This card suits shoppers planning the upkeep routine for a shirt with delicate buttons.[1,3]
Image Analysis
2 images- 01
Product
Front view of a long-sleeve men's button-up dress shirt with vertical blue stripes, worn tucked into trousers; visible features include point collar, central button placket, barrel cuffs, and smooth poplin-like fabric.
- Overall garmentLong-sleeve button-up dress shirt with a white base and evenly spaced vertical blue stripes across the front and sleeves, shown tucked into trousers.
1 region
x 0.06 · y 0.14 · w 0.76 · h 0.60 (high) - CollarStandard point collar, pressed and lying flat, with stripes running vertically on the collar pieces.
1 region
x 0.36 · y 0.06 · w 0.28 · h 0.12 (high) - Button placketCentral stitched front placket with buttons concealed by the tie area but visible stitching and alignment down the center front.
1 region
x 0.34 · y 0.18 · w 0.12 · h 0.52 (high) - Cuffs and sleeve treatmentBarrel cuffs visible on both wrists; left sleeve cuff folded slightly when arm is bent, right sleeve cuff buttoned and visible at wrist.
2 regions
x 0.06 · y 0.50 · w 0.24 · h 0.22 (high); x 0.64 · y 0.54 · w 0.20 · h 0.22 (high) - Fabric appearanceSmooth, lightweight woven fabric with a crisp, slightly lustrous finish consistent with poplin; fabric shows natural vertical crease lines where the sleeves are bent.
1 region
x 0.10 · y 0.20 · w 0.60 · h 0.48 (high) - Shoulder and yokeVisible shoulder seam and yoke area with stripe pattern continuing across the seam, showing standard set-in sleeve construction.
1 region
x 0.10 · y 0.12 · w 0.70 · h 0.18 (medium)
Other
Lifestyle studio shot of a model wearing the shirt against a plain light background with soft shadowing; additional styled items and a prop bottle are partially visible.
- Model stylingMale model shown from upper thighs to head wearing the shirt tucked into dark trousers and accessorized with a striped tie, belt, wristwatch, and glasses; these items are styling elements not described as product features.
1 region
x 0.08 · y 0.06 · w 0.84 · h 0.90 (high) - PropA partially visible cylindrical bottle held behind the model's left hip, cropped by the image edge.
1 region
x 0.02 · y 0.76 · w 0.16 · h 0.14 (high) - Background and lightingPlain off-white background with a soft shadow cast to the right of the model, even neutral studio lighting with slight warm tone.
- Image crop and framingVertical crop showing model from head to upper thighs, centering the torso and shirt; tie and belt overlap the shirt area.
Colors
white· shirt backgroundlight sky blue· primary stripesnavy blue· secondary stripes- Overall garmentLong-sleeve button-up dress shirt with a white base and evenly spaced vertical blue stripes across the front and sleeves, shown tucked into trousers.
- 02
Product
A neatly folded long-sleeve, button-front dress shirt with vertical blue and white stripes, spread collar visible and one folded cuff shown on the left side of the image.
- Overall presentationShirt is flat-folded with the front placket facing up, left sleeve folded over the body showing the cuff near the lower left, and the collar open and laid flat at the top.
- CollarPoint-style spread collar with visible collar stand and interior showing two sewn labels; collar points lay flat and slightly angled outward.
1 region
x 0.18 · y 0.03 · w 0.64 · h 0.20 (high) - Labels inside collarTwo stacked fabric labels sewn to the interior collar stand, one black label above a white label.
1 region
x 0.39 · y 0.07 · w 0.22 · h 0.09 (high) - Label text - brand“THOMAS MASON”
1 region
x 0.43 · y 0.10 · w 0.16 · h 0.04 (high) - Label text - fabric line“FABRICS / TISSUS”
1 region
x 0.44 · y 0.13 · w 0.14 · h 0.03 (high) - Possible label text - collection“LE 31”Partial
1 region
x 0.37 · y 0.07 · w 0.12 · h 0.06 (medium) - Placket and buttonsCenter front placket with vertically aligned round, four-hole buttons in a light off-white color; one buttonhole visible at the collar stand area.
1 region
x 0.40 · y 0.24 · w 0.20 · h 0.70 (high) - CuffSingle-button barrel cuff folded back over the sleeve with two visible buttons on the cuff placket area and edge stitching visible.
1 region
x 0.03 · y 0.62 · w 0.30 · h 0.33 (high) - Striped patternEvenly spaced vertical stripes: alternating narrow dark blue and white stripes on a light blue background; stripes continue across collar, cuff, and body aligned with placket
1 region
x 0.05 · y 0.20 · w 0.90 · h 0.74 (high) - Fabric appearanceSmooth poplin-like weave with a crisp, slightly lustrous finish visible in the flat, ironed presentation.
Other
Product shot on a neutral light gray background with soft shadow below the shirt; lighting is even and diffuse with the shirt centered in the frame.
- BackgroundUniform pale gray backdrop filling the frame.
- ShadowSoft drop shadow visible beneath the shirt toward the bottom edge of the image
1 region
x 0.08 · y 0.88 · w 0.84 · h 0.10 (medium) - Shot compositionTop-down studio product shot tightly cropped so the folded shirt fills most of the vertical frame; no props or people present.
Colors
light blue· main clothdark blue· dark stripeswhite· white stripesoff-white· buttons
Variants
8 SKUs| SKU | Title | Price | Avail |
|---|---|---|---|
| 4745938 | Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit - Patterned Blue - 145 | CA$375.00 | Yes |
| 4745939 | Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit - Patterned Blue - 150 | CA$375.00 | Yes |
| 4745940 | Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit - Patterned Blue - 155 | CA$375.00 | Yes |
| 4745941 | Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit - Patterned Blue - 160 | CA$375.00 | Yes |
| 4745942 | Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit - Patterned Blue - 165 | CA$375.00 | Yes |
| 4745943 | Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit - Patterned Blue - 170 | CA$375.00 | Yes |
| 4745944 | Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit - Patterned Blue - 175 | CA$375.00 | Yes |
| 4745945 | Blue-Striped Poplin Shirt An Exclusive Collaboration Made In Canada Standard Fit - Patterned Blue - 180 | CA$375.00 | Yes |