| RefrigiWear Extreme Sock | Lime | Ragg Wool/Nylon | L/XL. RefrigiWear Hi-splice nylon reinforcements in toe and heel Mesh ventilation on top of foot for maximum breathability Arch support You are always ready for whatever the job takes - even overtime. Make sure your feet are, too. With the Extreme Socks you don't just get warmth and - you get footwear that lasts as long as you do. Advanced construction means you get a cushioned sole with a breathable top that can take all the abuse of a full day - plus more. The entire Extreme Collection, now with head... - RefrigiWear Extreme Sock | Lime | Ragg Wool/Nylon | L/XL. |