Built for the coldest days, this Lands' End jumpsuit features a waterproof, windproof nylon shell to keep moisture and chilly gusts at bay. The upper body and hood are finished with a soft fleece lining, while 100-grams of insulation in the sleeves and lower body provide warmth in temperatures down to -21 degrees Fahrenheit. Thoughtful details like an elastic waist and reinforced Iron Knee construction offer a comfortable fit that lasts through a full season of snow-filled adventure.