Muck Boot Unisex Muckmaster Gold Nylon, Rubber Outdoor Boots Nylon Commercial grade construction with Muck comfort and performance, lightweight and 100% waterproof Four-way stretch nylon CR flex-foam bootie - self-insulating and form fitting, breathable airmesh lining Removable Nitracel EVA footbed sockliner for additional comfort and stability, molded EVA-molded midsole with contoured footbed Natural rubber overlay with reinforced toe and heel stretches high up calf for extra protection, lightweight high abrasion rubber outsole - top protection and stability on any terrain Wrap up toe bumper, 10mm kick rim for easy removal, 16'' boot height