This replacement belt and buckle can be used for items 6018 Swim Belt, 6038 Aqua Fitness Belt, 9321 Bubble Back Float and the 9322 Learn to Swim Back Float. The strap is made of nylon and plastic, is latex free and fits many other brands of water running belt. The belt is 44" long by 1" width. Features an adjustable waist with quick release buckle. Pending on supply the belt will either be black or blue color.