Uppers are made of genuine neoprene and rubber; 100% waterproof neoprene-bootie construction with breathable Airmesh Lining; Storm-proof natural-rubber shell with protective toe and heel reinforcements; Dureva outsole - ultra lightweight and durable with grippy Starliner tread; Premium fully-moulded removable PU sockliner for all-day comfort and durability; Built on a sneaker platform for speed and agility; Contoured internal nylon shank for added arch support; Easy on/off convenience with 4-way stretch topline openings; Fully buoyant even when completely submerged; Quick clean-up with soap and water