Travel Sock. Put the pack of mules out to pasture - the Outfitter is all the equipment you'll need for any expedition. CoolMax Polyester keeps moisture under control while X-Static odor-fighting fibers keep you from smelling like a donkey. CoolMax is a high-performance, four-channel polyester fiber that is engineered to move moisture and speed the evaporation or perspiration. It is a superior fiber for wicking action, drying time, moisture absorption and transport. X-Static safely inhibits the growth of odor-causing bacteria and fungi in the sock. X-Static also uses thermal conductivity of silver to regulate temperature throughout the sock. Your hooves will be dry and comfortably cushioned in this all-season weight travel crew. Fiber Content: 73% CoolMax Polyester, 24% Nylon, 2% X-Static , 1% Lycra Spandex. Sold as 3 pair packs.