Perform at your best in unpredictable environments all-year round with the reliable and comfortable protection of the Kamik® Shelter boot! Neoprene upper with a waterproof 7mm four-way stretch design. Moisture-wicking air mesh and fleece lining for the perfect combination of breathability and warmth.Shaft can be folded down to reveal orange safety collar. Features Aegis® Antibacterial Treatment throughout the boot for superior protection against odors. Kamik's LockFIT technology uses injection molding and proprietary split last construction for a specific foot form. It creates a more tailored, comfortable and supportive fit to minimize movement and lost energy, without sacrificing ease of entry or protection. Back heel kick for easy removal. Removable EVA AEGIS® Antibacterial insole provides a fresh foot environment. X shank for reliable support.Waterproof,lightweight Synthetic Rubber(He) shell offers a flexible fit with enduring protection. Kamik's Rubber(He) GUIDE 4-Season Outsole is ideal for outdoor use in any season. Outsole bottom oil, acid, and slip resistant. Temp rated at -40°F/-40°C. (Yup, those temp conversions are correct.)Made in the U.S.A. with imported materials.