Smoky Mountain Men's Amphibian Slip-On Boots The Smoky Mountain Men's Amphibian Slip-On Boots are designed to withstand the muddiest conditions. Made from durable neoprene rubber, these slip-on shoes feature a round toe and slip-resistant sole. Features: Waterproof Easy slip-on design Durable rubber neoprene upper Neoprene lining Round toe Slip-resistant sole Item Specifications: Material: Neoprene/Rubber Toe: Round Sole: Slip-resistant Rubber