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. Sole Unit| Compression-molded EVA midsole for long-lasting cushioning. Streamlined, waterproof, molded-TPU shell for increased flexibility. Surface Control™ rubber outsole optimized for winter conditions. Has a secure heel fit.