Icetek Sports Aquatic Exercise Dumbells for Water Aerobics (1 Pair) Made from EVA foam, providing buoyancy and low water absorption Warning: not to be used as a flotation device. For ages 14+ Each barbell measures 11" long x 6" wide and weighs 66lbs Work your upper body as well as your lower back and ABS for a total fitness workout This is a higher resistance dumbbell. For weight loss