The perfect barrier for use in wet and warmer weather conditions, these 100% waterproof ankle-length socks feature a three-layer construction for warmth, durability and waterproofing. The three-layer bonded construction combines a bamboo lining, a 100% waterproof hydrophilic membrane and a durable nylon blend exterior with 4-way stretch for great fit and wearability. The unmatched breathability of the hydrophilic waterproof membrane enables the release of perspiration, steam and warm air from inside the sock, while also preventing rain, mud, and sand from getting inside the sock. Feet are kept very comfortable with zonal elastication for added support where you need it most, with elastic support on the ankle, heel and instep. Anti-blister technology features with hand-linked flat toe seams helping to prevent rubbing. Comfort is further enhanced with a bamboo lining for moisture control and insulation with a close fit offering a four way stretch.