Out here in the Pacific Northwest, if you don't work in the rain, it seems you won't work at all. These socks have saved the day. WATERPROOF/breathable Sealskinz socks keep the feet dry even when your workboots are soaked! Also great for hunting. Breathable. 3-layer construction--durable nylon outer layer, MVT waterproof/breathable membrane in the middle and moisture-wicking CoolMax(R) inner layer. Foot-forming, seamless construction prevents uneven spots that cause blisters; nylon/Lycra® spandex cuffs prevent sliding down. Wear a light moisture wicking liner sock under Sealskinz for optimal performance. Mid-calf height.