This outdoor skiing wading sports warm breathable waterproof sock is the ideal choice for adventure, mountaineering, and cycling, with a three-layer waterproof thickened design, comfortable and breathable, wear-resistant and durable. Features: Elastic Sock Mouth: Moderate elasticity, not easy to age, provides a comfortable wearing experience. Reinforced Heel: Y-shaped heel, reinforced and wear-resistant, enhances the durability of the socks. Hand-sewn Head: The sock head is hand-sewn, comfortable to wear, and not easy to rub the feet. Three-layer Waterproof Thickened Design: The waterproof breathable membrane is sandwiched between the dry outer layer and the comfortable inner layer, keeping the feet dry. Preferred Comfortable Cotton: Soft and breathable without pilling, provides a high-quality wearing experience. Specifications: Outer Layer Material: 98% High Wear-resistant Nylon, 2% Elastic Rubber Middle Layer Material: Thin Waterproof Film Inner Layer Material: 80% Fine Yarn, 20% Nylon Size S M L XL Bottom length/cm 20-21 22-23 24-25 26-27 Foot Code 36-39 40-42 43-46 47-50 Package Weight: 140g (4.9oz) Package Size: 27*14*3cm (10.6*5.5*1.2in) Package List: 1 * Waterproof Sports Sock