Icebreakers classic, go-to boxer brief built with a super-soft, stretchy and highly durable merino wool blend, and outfitted with the support and comfort you need for both daily life and weekend adventures, the Anatomica Boxers with Fly are the underwear youve been searching for. With an updated fit that makes them even more comfortable, the Anatomica Boxers also features Icebreakers corespun fabric, which uses nylon fibers wrapped in merino wool for increased durability and strength that retains next-to-skin softness. Flatlock seams eliminate chafing when youre on the move, and the contoured pouch with a functioning fly offers support and function.