KEEN.WARM insulation helps keep feet warm in temperatures down to -25°F/-32°C, but still allows feet to breathe; KEEN Luftcell lightweight footbed is used for long-lasting comfort right out of the bo WATERPROOF HIKER: Protected by KEEN. DRY waterproof, breathable membrane; Made with waterproof leather upper and breathable mesh lining KEEN ALL-TERRAIN rubber outsole provides higher-traction grip in muddy environments and on rocky surfaces; Non-marking rubber outsoles leave no trace when walking indoors SUPPORT & COMFORT: Stability shank offers lightweight support for improved mobility and torsion control on uneven surfaces; Cushioned collar reduces irritation and discomfort around ankle; Shock absorbing cushioning springs back after each step CARE TIPS: Gently brush the boot with a soft bristle brush or hand towel to remove loose dirt and debris; Treat stains by lightly rubbing a gum eraser in a circular motion over the location and lightly brush afterward