The original Sealskinz ankle-length sock that is completely waterproof serves as an ideal barrier for use in wet and warmer weather conditions. This sock boasts a three-layer construction providing warmth, durability, and waterproofing. It ensures foot comfort with a bamboo lining that controls moisture, offers insulation, and enhances overall comfort. The inclusion of zonal elastication provides added support, while the four-way stretch ensures a close and comfortable fit. Additionally, flat toe seams prevent rubbing for enhanced toe comfort. Materials Outer: 94% Nylon, 6% Elastane Membrane: 100% Polyurethane Inner: 75% Bamboo rayon, 23% Nylon, 2% Elastane