How does the 'loose fit' compare to a standard medium? Should I size down if I prefer a more tailored look?

The 'loose fit' is roomier than a standard medium cut. If you prefer a more tailored look, sizing down is a common approach, but without exact measurements, we recommend checking the size chart or ordering both sizes to compare.

Is this shirt machine washable? Does it require ironing after washing?

Yes, this 100% cotton poplin shirt is machine washable. Like most cotton poplin, it will likely require ironing after washing to maintain a crisp appearance, though we don't have specific care instructions from the brand.

Are the pearly buttons mother-of-pearl or plastic? How durable are they?

The buttons are described as 'pearly buttons,' which typically indicates a plastic button with a pearlescent finish rather than genuine mother-of-pearl. They are generally durable for normal wear, but we do not have specific durability testing from the brand.

Sunflower

Vertical Stripes Poplin Shirt

CA$275.00CAD

In Stock

This is a men's long-sleeve button-up shirt made from 100% cotton poplin with a light blue and white vertical stripe pattern. It features a point collar, left chest patch pocket, pearly button closures, barrel cuffs, curved hem, and a back yoke with center box pleat and locker loop. The loose fit and lightweight fabric make it suitable for casual everyday wear.

Color: Blue
Material: 100% cotton poplin
Gender: male
Style: casual, smart-casual, classic, minimal, modern
Category: Apparel & Accessories > Clothing > Shirts & Tops

Color

Blue

Size

SMALLMEDIUMLARGEX-LARGE

View on merchant site JSON

Specifications

A timeless, versatile striped blue shirt in lightweight 100% cotton poplin with a loose fit, pearly buttons, and chest pocket.

Lightweight cotton poplin, loose fit, pearly buttons, chest patch pocket, vertical stripes.

Color: Blue · blue
Material: 100% cotton poplin
Style: casual, smart-casual, classic, minimal, modern
Occasion: everyday, casual, business-casual, work
Gender: male
Age Group: adult
Condition: new
Category: Apparel & Accessories > Clothing > Shirts & Tops

Additional Attributes

100% cotton poplin fabric
loose fit silhouette
pearly button closure
chest patch pocket
vertical stripe pattern
timeless versatile style
lightweight and breathable
traditional tailoring inspired
easy-care fabric
classic shirt design

Product Insights

The Vertical Stripes Poplin Shirt from Sunflower is a versatile, year-round smart-casual staple with a lightweight poplin fabric that layers under knitwear or blazers and wears untucked thanks to vertical stripes slimming the loose fit; the main tradeoffs are that the fit varies by color (blue is loose, white is regular) and the pearlescent buttons are plastic rather than mother-of-pearl, but the shirt pairs best with solid trousers and is machine washable for everyday durability.

Verified claims

Fit: Blue is loose fit; white is regular; size down for tailored look.
Use cases: Layers under knitwear or jacket; patch pocket signals smart-casual.
Care: 100% cotton poplin machine washable; pearly buttons are plastic.
Smart-casual: Pairs with chinos, five-pocket pants, or dark denim.
Year-round wear: Lightweight and comfortable for all-day, year-round wear.
Button material: Buttons are plastic with pearlescent finish, not mother-of-pearl.
Sizing advice: Loose fit is roomier; size down for a more tailored silhouette.
Hem length: Untucked hem should end just at the hip bone.
Untucked styling: Vertical stripes slim the loose fit for a streamlined untucked silhouette.
Versatility: Poplin fabric is light enough for warm-weather untucked wear and layers well in cooler seasons.
Trouser pairing: Pairs best with solid trousers in navy, beige, grey, or khaki for a clean look.
Blazer layering: Stripes add subtle pattern break at collar and cuffs under a blazer.
Buttons: Pearly buttons are plastic, not mother-of-pearl; durable for everyday wear.
Weight: 90–130 g/m² poplin keeps the shirt light for summer and substantial for layering.
Style: White-and-blue stripes visually lengthen and pair with navy, grey, or khaki for versatile wear.
Outfit styling: Layers under navy or charcoal blazers; also works as a smart-casual staple with solid trousers.
Seasonality: Lightweight poplin transitions from summer to layered fall outfits.
Elongation: Vertical stripes elongate the loose-fit silhouette.

Product record

Title: Vertical Stripes Poplin Shirt
Brand: Sunflower
Price: 275 CAD
Availability: In stock

Deep Research

How the loose fit compares to standard sizing

The blue colourway is the ‘loose fit’ version of Sunflower’s striped poplin, while a white sibling is sold as ‘regular fit’ — a design split that means the blue shirt is cut with more fabric through the body and chest for a deliberately oversized drape, unlike the closer‑to‑body regular variant.

How to wear a blue striped poplin shirt

The chest patch pocket — a detail drawn from military and workwear shirting — firmly positions the shirt in smart-casual territory, meaning it pairs more naturally with chinos, five-pocket pants, or dark denim than with a formal worsted suit.
Because the shirt is cut with a loose fit, it is designed to be worn open and untucked; the critical rule is that the hem ends at the hip bone — any longer drags the silhouette into sloppiness.
Vertical stripes naturally draw the eye, so the most reliable pairings are solid-coloured trousers — navy chinos, beige chinos, or dark wash denim — which allow the shirt's stripe to carry the outfit without competing.
White-and-blue vertical stripes are widely accepted in professional settings, and when layered under a navy or charcoal blazer the stripe adds a subtle pattern break at the collar and cuffs without competing with the jacket.
Poplin's weight band of 90–130 g/m² gives the shirt the lightness for summer wear while still providing enough substance to layer comfortably under knitwear or a jacket in cooler months, making it a three-season staple.
Blue and white stripes slot most naturally with navy, grey, or khaki trousers; using bottoms in the identical blue hue as the shirt's stripe collapses the visual contrast and can leave the outfit reading as a single-toned block rather than an intentional pairing.
Vertical stripes naturally guide the eye in an up-and-down direction, producing a lengthening effect that offsets the boxiness of the loose fit — the result is a relaxed silhouette that still reads as streamlined rather than bulky.

Image Analysis

3 images

01: Product
Light blue long-sleeve button-up shirt with fine vertical white stripes, point collar, left chest patch pocket, buttoned cuffs, and a slightly longer curved back hem; worn by a model in a three-quarter side pose.
Fabric patternFine vertical white stripes on a light blue woven shirt body, stripes consistent across front, sleeve and pocket panels.
1 region
x 0.14 · y 0.04 · w 0.45 · h 0.48 (high)
CollarStandard point collar with visible topstitching and a folded collar stand, collar lies flat against the neck.
1 region
x 0.26 · y 0.02 · w 0.18 · h 0.09 (high)
Front button placketSingle row of visible buttons down the shirt front on a straight placket; buttons are light colored and evenly spaced.
1 region
x 0.32 · y 0.08 · w 0.08 · h 0.54 (high)
Chest pocketSingle patch pocket located on the left chest (viewer right), matching stripe orientation and stitched at its edges.
1 region
x 0.36 · y 0.16 · w 0.13 · h 0.14 (high)
CuffsButtoned barrel cuffs with visible button closure and slight fabric gather at the wrist.
1 region
x 0.18 · y 0.45 · w 0.10 · h 0.12 (high)
Hem shapeShirt hem is curved with the back hem longer than the front, creating a visible rear drop when viewed from the side.
1 region
x 0.12 · y 0.38 · w 0.27 · h 0.22 (high)
Fabric appearanceSmooth, lightweight woven fabric with soft drape and minimal surface texture visible.
1 region
x 0.14 · y 0.08 · w 0.40 · h 0.40 (high)
Other
Studio full-body product shot on a plain light background showing a model in a three-quarter side stance wearing the shirt with jeans and black shoes; even diffuse lighting with soft shadows.
Model poseMale model standing in a three-quarter side pose facing right (viewer left), left arm relaxed at side with hand visible.
1 region
x 0.08 · y 0.00 · w 0.84 · h 1.00 (high)
BackgroundEven light neutral background with no visible props or texture, creating high contrast with the clothing.
Supporting garmentsModel wears blue denim jeans and black leather pointed shoes; these items are visible but not described as part of the shirt product.
1 region
x 0.30 · y 0.52 · w 0.46 · h 0.44 (high)
Lighting and shadowsSoft, diffuse studio lighting with minimal harsh shadows and slight shadowing beneath shoes.
Image framingFull-body crop from head to shoes with the model centered-left in the frame; no visible text or labels in the scene.
Colors
light blue with white stripes· shirt body#ACC4DBoff-white· buttons
02: Product
Front view of a long-sleeve light blue poplin shirt with thin white vertical stripes, point collar, left chest patch pocket, white buttons, sleeves rolled to forearms, worn untucked in a relaxed fit.
Overall fabric and patternLight blue smooth poplin fabric with evenly spaced thin white vertical stripes across the visible front and sleeves.
1 region
x 0.08 · y 0.06 · w 0.84 · h 0.86 (high)
CollarClassic point collar with visible collar points and an open top button, collar sits slightly spread.
1 region
x 0.35 · y 0.06 · w 0.30 · h 0.12 (high)
Button placket and buttonsCenter front button placket with vertically spaced round white buttons; placket is visible from collar to hem.
1 region
x 0.43 · y 0.22 · w 0.14 · h 0.58 (high)
Left chest pocketPatch pocket on the shirt's left chest aligned with the stripe pattern and sewn at top edge.
1 region
x 0.58 · y 0.28 · w 0.20 · h 0.18 (high)
SleevesLong sleeves rolled up to the forearms creating soft folds; rolled cuffs show inner side of fabric with same stripe pattern.
2 regions
x 0.06 · y 0.43 · w 0.30 · h 0.20 (high); x 0.66 · y 0.43 · w 0.28 · h 0.24 (high)
Hem and fitShirt worn untucked with a straight hem that falls over the waistband of blue jeans, showing relaxed, slightly loose fit and minor fabric wrinkles.
1 region
x 0.20 · y 0.68 · w 0.60 · h 0.24 (high)
Other
Studio product shot with a cropped model, plain light background, even soft lighting and minimal shadows; image cropped at model mid-face and mid-thigh.
Background and lightingEven, neutral light gray background with soft diffuse lighting and minimal shadows around the subject.
Shot compositionCentered crop showing the torso and upper legs of a model; image is cropped just below the nose and above mid-thigh.
Model pose and handsModel's left hand relaxed at side and right hand placed near front pocket of jeans, partially tucking the shirt; forearms exposed due to rolled sleeves.
2 regions
x 0.06 · y 0.64 · w 0.20 · h 0.32 (high); x 0.64 · y 0.66 · w 0.30 · h 0.30 (high)
Image qualityHigh-resolution retail photograph with clear detail and no visible compression artifacts.
Colors
light blue· main fabric#ADCAE4white· vertical stripeswhite glossy· buttons
03: Product
Rear view of a long-sleeve light blue poplin shirt with narrow white vertical stripes, spread collar, back yoke with center box pleat and a small locker loop, buttoned barrel cuffs visible at sleeve ends.
Back body panelFlat rear shirt body with narrow white vertical stripes on a light blue ground; fabric shows a single center box pleat running down from the yoke to the hem.
1 region
x 0.12 · y 0.18 · w 0.76 · h 0.64 (high)
Back yoke and locker loopHorizontal back yoke across the shoulders with a short rectangular locker loop centered at the top of the box pleat.
1 region
x 0.28 · y 0.06 · w 0.44 · h 0.12 (high)
CollarClassic spread collar in matching striped fabric visible from the rear neckline.
1 region
x 0.32 · y 0.00 · w 0.36 · h 0.07 (high)
SleevesLong set-in sleeves in matching fabric, hanging straight with slight natural folds; seam line visible at shoulder.
2 regions
x 0.02 · y 0.24 · w 0.28 · h 0.60 (high); x 0.70 · y 0.24 · w 0.28 · h 0.60 (high)
Barrel cuffs and cuff buttonsRounded barrel cuffs with visible two-button fastening on left cuff and one visible button on right cuff; cuffs match the striped fabric.
2 regions
x 0.04 · y 0.74 · w 0.16 · h 0.20 (high); x 0.80 · y 0.72 · w 0.16 · h 0.22 (high)
Hem shapeShirt hem is curved with a scooped side seam visible above the jeans pocket area.
1 region
x 0.18 · y 0.70 · w 0.64 · h 0.20 (high)
Striping patternNarrow evenly spaced white vertical pinstripes running the full length of the shirt back and sleeves; stripes continue across yoke with orientation preserved.
1 region
x 0.12 · y 0.18 · w 0.76 · h 0.64 (high)
Other
Studio rear-facing product shot on a plain light gray to white background showing the shirt on a model from the shoulders to mid-thigh; even soft lighting with minimal shadows.
Shot compositionRear-facing medium shot of a model wearing the shirt, framed from the upper neck to mid thighs, centered in the image.
Background and lightingUniform light gray to white seamless background with soft, even studio lighting and minimal cast shadows.
Model and propsMale model partially visible from the back wearing blue denim jeans; hands and part of the neck and hairline visible.
2 regions
x 0.30 · y 0.00 · w 0.40 · h 0.10 (high); x 0.28 · y 0.78 · w 0.44 · h 0.20 (high)
Colors
light sky blue· shirt body#ACC4DCwhite· vertical pinstripes#EAF2FDwhite· cuff buttons

Documents & Data

Q&A

3 answered

How does the 'loose fit' compare to a standard medium? Should I size down if I prefer a more tailored look?: The 'loose fit' is roomier than a standard medium cut. If you prefer a more tailored look, sizing down is a common approach, but without exact measurements, we recommend checking the size chart or ordering both sizes to compare.
Is this shirt machine washable? Does it require ironing after washing?: Yes, this 100% cotton poplin shirt is machine washable. Like most cotton poplin, it will likely require ironing after washing to maintain a crisp appearance, though we don't have specific care instructions from the brand.
Are the pearly buttons mother-of-pearl or plastic? How durable are they?: The buttons are described as 'pearly buttons,' which typically indicates a plastic button with a pearlescent finish rather than genuine mother-of-pearl. They are generally durable for normal wear, but we do not have specific durability testing from the brand.

Provenance

Merchant Link: https://www.simons.ca/en/men-designer/shirts/vertical-stripes-poplin-shirt--21544-16713181?colourId=0
Updated: July 31, 2026