foam cushion, 1.The knee pad reduces stress on your knees ... proof and Environmental firendly 3.Variety color is ok Foam cushion,body board,floating cushionEPE foam material, innocuity,with varied ... .4)Suitable for swimming and outdoor use with high performance.5). non-toxic ,non smell EPE foam,safe and Eco ... ).Features:waterproof,light,safe,eco-friendly EPE foam baby cushion,Foam knee cushion.Knee pad