Waterproof leather and performance mesh upper with a Keen Dry waterproof and breathable membrane. The leather mudshield offers resilient durability and speed hooks ensure a secure fit. KEEN.WARM 200G insulation keeps feet warm in temperatures down to -25° F / -32° C while allowing feet to breathe. A heat reflecting board provides a thermal underfoot barrier. The higher traction lightweight KEEN, fusion rubber sole provides sure footing. Features a fleece lining for soft warmth and a lace lock bungee capture system for a quick and easy way to get footwear on and off. Includes a high abrasion rubber tip for added durability and protection. Gently brush with a soft damp sponge to remove loose dirt and treat stains right away with a gentle cleaner. Air dry away from heat.