Upper is 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 super-lightweight one-piece outsole formulated for long wear without the need for secondary rubber sole - Grippy Starliner tread - Removable PU sock liner 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 top-line openings - Fully buoyant even when completely submerged - Quick clean-up with soap and water - Fits standard athletic shoe sizes - best to fit with a thin running shoe ankle-height or no-show sock