WATERPROOF SURFACE: The vamp of these winter boots were made of quality waterproof oxford cloth, feel soft, waterproof, warm, comfortable. BREATHABLE WARM LINING: Our shoes lining use the fine artificial short plush, completely wrapped your feet. They keep your feet warm and dry in freezing winter days. ANTI-SKID SOFT SOLE: Ultra-wear resistant polyurethane, non-slip, high flexible, shockproof; comfortable for long time's wear and walking.