Men’s polo Men’s polo shirt made from polyester/spandex Machine wash Imported Ko's style number 5310-1 Channel tropical relaxation every time you wear Ko's Osaka men’s polo shirt. The subtle all-over geometric pattern sets a stylish background for the dramatic floral print on the chest and shoulders. Perfectly finished with a striped rib-knit collar, cuffs and hem, this well-crafted Ko's polo for men brightens up your wardrobe in an instant.