Running in soaking wet can cause your feet to crease or get wrinkly, especially on ultra runing. The new generation of DexShell running socks, with abrasion resistant COOLMAX® moisture management inners, were designed to keep feet dry and comfortable in any awful weather and terrain. The high performance Porelle® membrane is 100% waterproof and highly moisture permeable, protecting from all the outdoor elements and letting you concentrate on the challenge that you are battling against.