Like Crocs with even thicker skin, the burliest gaiters we make are designed to function on extended mountaineering trips, in cold weather and in extreme conditions. The large circumference provides more room for plastic mountaineering boots and heavily insulated pants, and the inside leg of each gaiter is made of durable Cordura fabric to prevent crampon snagging and puncturing when you're high in the mountains. Waterproof. 2 in.-wide hook/loop front closure. Abrasion-resistant cordura inner leg and boot. Abrasion-resistant lower boot lined with packcloth. Bottom shear tab secures front closure. Double-stitched front closure. Larger circumference accomodates plastic boots. Lightweight and durable biothane instep strap. Durable biothane instep strap.