An ultra-comfy design and enough support for athletic pursuits make the men’s Anatomica Rib Boxers an Icebreaker best-seller. They are made from 180gm rib corespun fabric for extra stretch and strength. High merino wool content provides natural breathability, moisture-wicking performance, and odor-resistant properties. Corespun fabric retains next-to-skin softness by wrapping merino fibers around nylon. Flatlock seams and the closed contour pouch help reduce chafing.