
Seidensticker
Pyjama-Stripe Poplin Shirt Boxy Fit
The Seidensticker at Le 31 Pyjama-Stripe Poplin Shirt is a long-sleeve, button-front casual shirt with a boxy fit and vertical light-blue, white, and pale accent stripes. It is made of 100% cotton poplin and features a pointed collar, center button placket with white buttons, left chest patch pocket, buttoned barrel cuffs, dropped shoulders, a back yoke with central box pleat and locker loop, and a curved hem with short side slits. It is intended as a wearable top for everyday casual use.
- Material
- 100% cotton poplin
- Style
- casual, relaxed-fit, boxy
- Category
- Apparel & Accessories > Clothing > Shirts & Tops
Color
Specifications
Boxy-fit cotton poplin shirt with pyjama stripes and a chest patch pocket.
100% cotton poplin; boxy fit; patch pocket on chest; pyjama-stripe pattern
- Material
- 100% cotton poplin
- Style
- casual, relaxed-fit, boxy
- Occasion
- casual, everyday
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Shirts & Tops
Additional Attributes
- 100% cotton poplin fabric
- boxy fit
- pyjama-stripe pattern
- patch pocket on chest
- shirt silhouette
- poplin weave
- Seidensticker at Le 31 brand
Product Insights
Pyjama-Stripe Poplin Shirt Boxy Fit Boxy, relaxed cut with dropped shoulders and a curved hem that falls below the waist. 100% cotton poplin. Machine wash, no bleach, no tumble dry; iron with or without steam. At 285 CAD, it is a premium cotton shirt; value depends on wanting poplin's crisp hand and accepting its creasing and ironing needs.
Verified claims
- fit
- Boxy, relaxed cut with dropped shoulders and a curved hem that falls below the waist.
- sizing
- Offered in SMALL, MEDIUM, LARGE and X-LARGE, in Blue only.
- fit_guidance
- Measure your chest under the arms and over the shoulder blades; the boxy cut is meant to sit away from the body.
- material
- 100% cotton poplin.
- hand_feel
- Smooth, matte poplin with a light but substantial hand that holds its shape.
- comfort
- Breathable cotton with almost no stretch; the boxy cut supplies the ease.
- creasing
- Cotton poplin creases with wear and folding; expect to iron after most washes.
- care
- Machine wash, no bleach, no tumble dry; iron with or without steam.
- shrinkage
- Expect possible 1–3% shrinkage on first wash; cool wash and line drying keep it at the low end.
- care_routine
- Wash cold on a gentle cycle, inside out, with mild detergent; dry on a hanger in shade; iron on the reverse while slightly damp.
- ironing
- Poplin takes a crisp press easily; iron with or without steam.
- durability
- Tight poplin weave resists snagging better than looser weaves and is firm for its weight.
- stripe
- The vertical stripe runs continuously over the back and sleeves, consistent with a woven or yarn-dyed stripe.
- collar_placket
- Point collar with a collar stand and a center front placket; contrasting white buttons.
- construction
- Back yoke with a central box pleat and locker loop; dropped shoulder seams.
- construction
- Long sleeves with single-button barrel cuffs; curved hem with short side slits.
- Single left-chest patch pocket aligned with the vertical stripes.
- styling
- Pyjama-stripe blue pattern reads casual-classic; the boxy cut is designed to be worn untucked over trousers.
- use_cases
- Best for casual and smart-casual wear: weekends, layering over a tee, or with trousers for relaxed office settings.
- value
- At 285 CAD, it is a premium cotton shirt; value depends on wanting poplin's crisp hand and accepting its creasing and ironing needs.
- comparison
- Compared with crepe or satin, poplin is crisper and holds a collar better but creases more.
Product record
- Title
- Pyjama-Stripe Poplin Shirt Boxy Fit
- Brand
- Seidensticker
- Price
- 285 CAD
- Availability
- In stock
Buying Guide
1 comparison · 6 sourcesProduct comparison
Compared within this brand.
| Pyjama-Stripe Poplin Shirt Boxy Fit: Choose this if you want a relaxed, boxy-fit long-sleeve shirt in 100% cotton poplin with vertical pyjama-style stripes. It offers a traditional point collar, single left-chest patch pocket, single-button barrel cuffs, a dropped shoulder seam, and a curved hem with short side slits that extends below the waist. It comes in blue in sizes SMALL through X-LARGE.[1,2,3,4] | Pyjama-Stripe 100% Linen Shirt Regular Fit: Choose this for a light and breathable regular fit shirt made from 100% linen. This pyjama-stripe design features narrow vertical blue-and-white stripes, a classic point collar, and a centered front placket with pearl-white buttons. Note that the fabric has a visible linen weave and a slight slubbed texture.[5,6] |
Image Analysis
3 images- 01

Product
Long-sleeve button-front striped shirt on a model, visible front and both sleeves, with a pointed collar, single chest pocket, white buttons, and vertical stripe pattern.
- Overall front silhouetteLoose boxy long-sleeve shirt shown on a model, front-facing view with visible full torso, hem falling below waist and slight side slits at the bottom front.
1 region
x 0.06 · y 0.18 · w 0.88 · h 0.70 (high) - CollarPointed spread collar with visible collar stand and top button fastened, collar tips angled down toward the placket.
1 region
x 0.31 · y 0.10 · w 0.38 · h 0.18 (high) - Button placket and buttonsCenter front placket with visible round white buttons spaced down the front; placket is a single-fold style sewn over the stripe pattern.
1 region
x 0.40 · y 0.24 · w 0.20 · h 0.64 (high) - Left chest pocketSingle patch-style chest pocket on the left side, aligned with the vertical stripes so pocket seam is subtle.
1 region
x 0.58 · y 0.30 · w 0.18 · h 0.16 (high) - Sleeve construction and cuffsLong set-in sleeves with visible cuffs; cuffs appear to be single-button or simple closed cuffs and show slight gather where wrist meets cuff.
2 regions
x 0.06 · y 0.48 · w 0.33 · h 0.36 (high); x 0.62 · y 0.56 · w 0.32 · h 0.28 (high) - Vertical stripe patternEvenly spaced vertical stripes composed of a wider light blue ground with repeating narrow white stripes separated by very thin dark navy lines.
1 region
x 0.10 · y 0.24 · w 0.80 · h 0.60 (high) - Button color contrastButtons are white and contrast against the light blue fabric.
2 regions
x 0.48 · y 0.34 · w 0.08 · h 0.12 (high); x 0.48 · y 0.58 · w 0.08 · h 0.12 (high)
Other
Studio-style image showing a male model against a white background with a hard shadow to the right; even frontal lighting and slight high-contrast shadowing define contours.
- Model and poseMale model shown from head to upper legs, standing facing forward with hands partially in pockets; head and face fully visible.
1 region
x 0.20 · y 0.02 · w 0.60 · h 0.36 (high) - Background and shadowPlain white studio background with a distinct soft-edged shadow cast to the right of the model.
1 region
x 0.58 · y 0.00 · w 0.42 · h 1.00 (high) - LightingBright even frontal lighting with a slight directional light from left-front creating visible shadow on the right side of the model and shirt.
Colors
light sky blue· shirt bodywhite· vertical thin stripesdark navy· narrow stripe separatorswhite (buttons)· buttons- Overall front silhouetteLoose boxy long-sleeve shirt shown on a model, front-facing view with visible full torso, hem falling below waist and slight side slits at the bottom front.
- 02

Product
Front view of a long-sleeve, boxy button-up shirt with vertical narrow stripes, point collar, left-chest patch pocket, full-length sleeves with buttoned cuffs, and a straight hem falling over trousers.
- Overall silhouetteBoxy, relaxed-fit long-sleeve shirt shown from the front with the hem sitting over the top of the pants and a straight horizontal hemline.
1 region
x 0.18 · y 0.12 · w 0.46 · h 0.46 (high) - CollarTraditional point collar with visible collar points and top button area; collar lies flat against the model's neck.
1 region
x 0.33 · y 0.06 · w 0.18 · h 0.10 (high) - Button placketCentered front button placket with visible round buttons evenly spaced down the front; placket is same striped fabric as the shirt.
1 region
x 0.33 · y 0.16 · w 0.12 · h 0.31 (high) - Left chest pocketSingle patch pocket on the left chest integrated into the stripe pattern, with top edge visible at chest height.
1 region
x 0.39 · y 0.18 · w 0.10 · h 0.10 (high) - Sleeves and cuffsFull-length sleeves ending in buttoned barrel cuffs; right sleeve falls naturally while left sleeve is partly obscured by the model's hand in pocket.
2 regions
x 0.18 · y 0.38 · w 0.18 · h 0.20 (high); x 0.48 · y 0.26 · w 0.14 · h 0.30 (high) - Fabric appearanceSmooth, lightweight woven fabric with a matte finish and visible vertical crease lines consistent with a poplin-like weave.
1 region
x 0.22 · y 0.16 · w 0.40 · h 0.34 (medium) - Stripe patternVertical narrow stripes: a medium blue ground with regularly spaced thin white stripes and very thin pale yellow stripes between the white lines.
1 region
x 0.22 · y 0.12 · w 0.46 · h 0.46 (high)
Other
Studio shot with a standing male model against a plain white background. Even lighting from the front-right creates a soft shadow to the model's left. Image shows full body with slight cropping at feet.
- Model and poseMale model standing facing forward with head slightly turned; left hand in trouser pocket and right hand relaxed at side.
- Background and lightingPlain white seamless background with strong frontal lighting producing a narrow shadow cast on the background to the model's left.
- Visible outfit contextBlack wide-leg trousers and black shiny shoes are visible below the shirt and form part of the styled look but are not described as packaging or product details.
1 region
x 0.28 · y 0.52 · w 0.36 · h 0.42 (high) - Image framingFull-length vertical frame with the model centered horizontally and small left margin showing additional white space.
Colors
medium sky blue· shirt basewhite· shirt stripes - whitepale butter yellow· shirt stripes - pale yellow- Overall silhouetteBoxy, relaxed-fit long-sleeve shirt shown from the front with the hem sitting over the top of the pants and a straight horizontal hemline.
- 03

Product
Rear three-quarter view of a long-sleeve, boxy-fit button shirt with vertical stripes. Visible features include a back yoke with a central box pleat and small locker loop, dropped shoulder seam, single-button barrel cuffs, curved hem with a short side slit, and smooth poplin-like fabric.
- Overall silhouetteLoose, boxy rear three-quarter view of a long-sleeve shirt with a curved hem that extends below the waistline.
1 region
x 0.12 · y 0.10 · w 0.66 · h 0.80 (high) - Fabric appearanceSmooth, tightly woven poplin-like fabric with a matte finish and crisp drape, showing light vertical fall and minimal texture.
1 region
x 0.20 · y 0.20 · w 0.50 · h 0.60 (medium) - Stripe patternVertical stripes running continuously over the back and sleeves; primary light-blue background with regularly spaced thinner white stripes and very thin pale accent stripes between.
1 region
x 0.14 · y 0.12 · w 0.60 · h 0.72 (high) - Back yoke and pleatHorizontal back yoke across the shoulders with a central vertical box pleat below it and a small fabric locker loop centered on the yoke seam.
1 region
x 0.18 · y 0.08 · w 0.48 · h 0.18 (high) - Shoulder constructionDropped shoulder seam that sits below the natural shoulder line, visible on the sleeve cap and upper arm.
1 region
x 0.48 · y 0.18 · w 0.28 · h 0.22 (high) - Cuff detailSingle-button barrel cuff with a visible white button and vertical seam; cuff sits at model's wrist and is slightly gathered into the cuff.
1 region
x 0.64 · y 0.72 · w 0.16 · h 0.20 (high) - Hem and side slitCurved hem with a short side slit where the front hem is higher than the back, visible at the lower side seam.
1 region
x 0.18 · y 0.78 · w 0.34 · h 0.16 (high) - ButtonsSmall round white buttons visible on the cuff; no front placket buttons visible from this rear angle.
1 region
x 0.66 · y 0.78 · w 0.06 · h 0.08 (high) - Visible model portionPartial view of a model from the rear three-quarter showing head turned to the right, right hand and fingers visible at lower right wearing a ring.
1 region
x 0.56 · y 0.04 · w 0.36 · h 0.32 (high)
Other
Studio shot on a plain light background with directional lighting from the left front creating a sharp cast shadow of the model on the wall to the right; image framed as a mid-length rear three-quarter fashion shot.
- Background and shadowPlain light gray to white seamless background with a distinct dark shadow of the model cast on the wall to the right of the subject.
1 region
x 0.64 · y 0.06 · w 0.32 · h 0.60 (high) - Shot compositionMid-length vertical crop showing the model from head to just below the hips; product centered slightly left of frame.
- Lighting qualityHard directional studio light producing defined shadow edges and even illumination on the shirt surface.
Colors
light blue· shirt bodywhite· vertical stripespale beige· accent pinstripes- Overall silhouetteLoose, boxy rear three-quarter view of a long-sleeve shirt with a curved hem that extends below the waistline.
Variants
4 SKUs| SKU | Title | Price | Avail |
|---|---|---|---|
| 4697613 | Pyjama-Stripe Poplin Shirt Boxy Fit - Blue - Small | CA$285.00 | Yes |
| 4697614 | Pyjama-Stripe Poplin Shirt Boxy Fit - Blue - Medium | CA$285.00 | Yes |
| 4697615 | Pyjama-Stripe Poplin Shirt Boxy Fit - Blue - Large | CA$285.00 | Yes |
| 4697616 | Pyjama-Stripe Poplin Shirt Boxy Fit - Blue - X-Large | CA$285.00 | Yes |