The Defeet MenAAAAAA 1/2s WoolEator Bike Sock supports your weary slabs on the go or at home. Defeet made the WoolEator with a merino wool blend to keep your feet warm and dry no matter what the conditions. The WoolEator sports a snug fit to hold your foot firmly in place while you hike, bike or run the trails. Aireator mesh at the top of the foot allows your kicks to breathe and dries quickly.