The original, 100% waterproof ankle length sock with luxuriously soft Polycolon outer fabric, perfect for use in wet and warmer weather conditions. SealSkinz Waterproof Warm Weather Soft Touch Mid Length Sock Features Waterproof - three layer construction for warmth, durability and waterproofing Comfort - Bamboo lining for moisture control, insulation and comfort Support - zonal elastication for added support Close fit - four way stretch for comfort and stretch fit Comfort - flat toe seams prevent rubbing