Lacrosse Outpost II 10IN Boot - Women's Leather, Nylon, Rubber, Foam Insulating foam liner is completely removable Natural hand-laid rubber is waterproof and won't crack from extreme heat or harden in extreme cold Full-grain leather, suede and durable nylon provide water and snow resistance Snow grip outsole keeps your feet steady and secure through the slush, snow, and ice Foam insulated, best for snow