50 washes later, still sharp at the collar.
For polo shirts, signs of wear almost always begin at the collar. With each wash, the collar gradually starts to wave, curl, and lose its shape, eventually losing its presence beneath a jacket.
As a shirtmaker, we could not overlook this problem. Drawing on the dress shirt tailoring expertise that Kamakura Shirts has cultivated since its founding, our skilled Japanese craftsmen have applied those same techniques to this piqué polo shirt. Even after 50 washes, the collar remains crisp and upright. That is our answer.
Zero collar deformation, even after 50 washes.
The difference lies in the interlining.
Based on in-house laundering tests (using a standard washing cycle and common household detergent), we have confirmed that the collar maintains its shape and resists deformation even after 50 washes.
New
After 15 Washes
After 30 Washes
After 50 Washes
No Loss of Shape, Even After 50 Washes
A firm, shape-retaining interlining is fused into the collar using the same construction techniques employed in our dress shirts. This minimizes shrinkage and distortion caused by repeated laundering, helping preserve the garment's original silhouette—including its length—for years to come.
0 mm, Collar Edge Distortion After Washing
(In-house Measurement)
Compared with a conventional polo shirt, we measured the amount of deformation at the collar tip after repeated washing. Our flat-felled seam construction helps the collar maintain its precise shape, resisting the stresses of laundering and preventing the edges from curling or warping.
Unlike plastic buttons, our natural mother-of-pearl buttons retain their luster even after repeated washing. Inheriting the same premium specifications used in our dress shirts, this attention to detail ensures lasting elegance and refinement.
Beyond the Coventional Polo Shirts
Unlike conventional polo shirts, our collars feature the same interlining construction used in our dress shirts, creating a crisp, structured shape that resists deformation even after repeated washing. Whether worn on its own or beneath a jacket, the collar maintains a clean, three-dimensional appearance, bringing dress shirt elegance to a more casual garment.
Flat-Felled Seams and Fine Stitching for Lasting Durability
Our polo shirts feature flat-felled seam construction, a technique that fully encloses the seam allowance and requires each seam to be stitched twice for added durability. The result is a clean finish inside and out, exceptional comfort against the skin, and superior shape retention through repeated washing. Combined with fine, precise stitching, it delivers both lasting strength and a refined appearance.
Natural Mother-of-Pearl Buttons That Retain Their Beauty Over Time
Unlike plastic buttons, which can become dull after repeated washing, our natural mother-of-pearl buttons retain their elegant luster and smooth feel over time. Used throughout our dress shirt collection, they offer effortless buttoning, lasting durability, and a refined appearance that reflects our commitment to craftsmanship down to the smallest detail.
The Dress Shirt Maker's Polo for Business Casual
Fabric
78% Organic Cotton
22% Polyester
Piqué Knit
Collar
Dress Shirt Grade Construction
Structured Interlining for Lasting Crispness
Flat-Felled Seam
Button
Natural Mother-of-Pearl Buttons.
Same Specification as Our Dress Shirts
2026 Silhouette
Optimized "Golden Ratio" Length.2 cm shorter than the previous model for versatile tucked or untucked styling.
