Durable construction – reinforced toe and heel with hi-splice nylon Breathable design – mesh ventilation keeps feet cool and dry Comfort cushioning – cushioned sole reduces fatigue during long hours Arch support – built-in support for added stability and comfort 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.