SBART Women's 2mm Neoprene Wetsuits Jacket Long Sleeve Wetsuit Top neoprene Made of 2mm thick highly stretch neoprene; Comfortable Flatstitch Construction Excellent stretch and recovery fabrics; Form-fitting design reduces drag in water Premium lightweight neoprene with more air cells prevents water from coming in and out Specifically designed for water fitness and aqua aerobics UV protection and defense against sea lice, jellies and other biological irritants