Design: Waterproof and recyclable lightweight synthetic RubberHe shell Waterproof 1200 denier nylon upper for reliable protection during outdoor activities Synthetic carbon fiber accents Adjustable snow collar to keep the feet dry and comfortable Bungee lacing system with Easy-Grab Lace Lock for kid-friendly on and off NiteRays reflective technology for added safety In-Shoe Comfort: Moisture-wicking soft boa lining keeps your kiddo's feet feeling good all day long Foam and fleece insulation for added warmth Durability & Traction: Proprietary technology offers superior traction and increased flexibility ICEWAVE recyclable lightweight synthetic RubberHe outsole Multi-directional lugs for superior traction in the snow Additional Details: Comfortable down to -40degF Vegan-friendly