Comfortable, Durable and a Superior value. · Uppers constructed from Soft and comfortable premium 3, 5, or 7mm Thermoprene neoprene material. · All seams on upper are glued and sewn for durability and warmth using durable bonded thread. · Sole is constructed from soft and flexible thermoplastic rubber. · Soft and flexible Heavy duty traction sole with an internal puncture resistant liner. · #10 YKK zipper with “Water Entry Barrier” that limits water exchange and helps keep feet warmer longer. · Easy to put on and take off. · Men’s LARGER boot sizes available up to 16US · Wetsuit boots are designed to keep your feet warm, not dry, when they are used in, under or around water.