展开Waterproof upper to keep feet dry and cozy. Synthetic upper for durability. Alternative closure for easy on/off. Temperature rated to -25°F/ -32°C to ensure a warm wearing experience. Recycled PET linings. Anti-stink lining helps reduce odors. 200g insulation. 400g insulation on footbed. Non-marking outsole with extra grip for superior traction. Merrell temperature ratings are approximate based on high activity levels and can be affected by many conditions, including weather, wearer’s activity level, fitness, metabolism, perspiration, circulation, exposure time, clothing and cold sensitivity.