The Ultimate Liner Sock...your most important piece of equipment. Wear alone, or under another pair of socks. Great as a dress sock. Military Wear-Tested. Bilster Guard Features: Friction Free nylon fiber is knit into the toe, pad and heel to soothe and reduce friction. CoolMax for wicking moisture away from your skin. Lycra in the arch for a perfect fit. Content:43% Stretch Nylon, 32% CoolMax Polyester, 24% Friction Free nylon, 1% Lycra Spandex |