Updated for more underfoot comfort and a lighter weight, the Men's Chilkat V 400 Waterproof Boots still boast our warmest package of toasty Heatseeker Eco insulation for comfort on cold winter adventures. Upper: Made with a combination of full-grain waterproof leather and suede Elevated rustproof metal hardware Waterproof, seam-sealed construction 400 g Heatseeker Eco insulation for exceptional warmth Webbing loop at heel for easy on/off Heel clip for snowshoe compatibility D-ring at bottom of tongue for gaiter attachment