Mens Cotton Rich Button Fly Boxer Short Comfort Fit (Pack of 6) Mixed, , Button closure Mens Cotton Button Fly Boxer Short 6 Pack comfort fit with elasticated waist. Made with Plain - 100% Cotton, Marl & Yarn Boxers - 50% Cotton, 50% Polyester. Machine washable. These boxers allow your skin to breathe, making them very comfortable, they are great quality at affordable prices.