Environmentally-Friendly Premium Suede Leather - From Gold rated tannery by Leather Working Group. Ensures durability. GORE-TEX Extended Comfort - Keeps the water out and allows for breathability. 1.6 to 1.8 mm Water Repellent - Guaranteed to keep your feet dry. Asymmetric Long Lacing - For the best fit and comfort. Rubber Reinforced Toe and Heel - For increased protection.