Like their namesakes, "Crocs" have been around forever, they're tough as nails and stand the test of time. The instep strap is now triple-bartacked BioThane webbing, and an additional tab holds down the front opening. The fitted design and durable, waterproof fabrics are the standard for which all gaiters are judged. Burly three-layer Gore-Tex provides guaranteed waterproof breathable protection Highly abrasion-resistant 1000D Cordura on the inner leg and boot protects against sharp crampons and plastic boots Large circumference accommodates plastic boots and insulated pants Wide hook-and-loop front closure is quick and secure Bottom shear tab secures the front closure to the boot Durable BioThane instep strap keeps the gaiters securely in place Waterproof Windproof Breathable Abrasion-Resistant Laminated Construction Durable BioThane Instep Strap Abrasion-Resistant Cordura at Inner Leg and Boot Abrasion-Resistant Lower Boot Lined with Packcloth Larger Circumference Accommodates Plastic Mountaineering Boots Double Stitched Front Closure Reinforced Boot Lace Hooks Hook/Loop Front Closure Buckle Top Closure