The CRAFT ADV Warm windproof and waterproof children's insulated trousers are designed primarily for cross-country skiing. 100% recycled polyester; 100% polyester VentAir Wind membrane: 100% polyurethane - closer fit - wind and waterproof double-layer membrane in the front - soft brushed fleece on the inside for thermal comfort - slit knees - double drawcord at the waist - reycklated material