Water Dumbbell, Aquatic Hand Buoy, Aqua Aerobic Barbell Dumbell Foam New Light resistance closed cell foam with cushioned hand grip for easy grasping and extra comfort. These bar bells will not chip, crack or absorb water. Excellent for support and balance above the water or resistance exercises below the water. Often used in conjunction with water running belt. Quality product.Foam barbell has a smooth finish making it easy to clean and resistant to harboring bacteria (unlike the the typical white foam). Used on top of water for support and balance. e.g. gait training. Used underwater for resistance exercises e.g. strengthening and aerobic conditioning. This is a light resistance barbell- great for those new to aquatic exercise or for those suffering from arthritis. Latex Free. Light Resistance: approximately 112 cubic inches (submerged force of about 4 lbs). Sold as a pair. These bells are brand new (still in original plastic sealing), are of LIGHT resistance, are sold in pairs and are hugely popular with aqua aerobics class instructors. Size: 9" long, Handlebar Between foam around 5" long. Size of foam: 2" x 6" diameter