This adjustable dumbbell set is really fun. Play with it at home or at the beach. Show off your strength by lifting this dumbbell with ease. This dumbbell set includes 6 weight plates, 1 dumbbell bar, and 2 lock collars. Place one, two, or three weight plates on each end of the dumbbell bar and lock it into place using the lock collars. The weight plates comes in 3 different sizes: small (150ml), medium (250ml), large (400ml). This dumbbell set starts at 1lb and can increase when it is filled with either water or sand. Dumbbell measures 14" x 6" x 6". It's also very colorful with smooth edges. Your kids will love this dumbbell set!Features:Fun, Colorful Dumbbell Set6 Weight Plates, Dumbbell Bar, 2 Lock CollarsFill with Sand or Water14" x 6" x 6"Package Contents:1 Dumbbell Bar6 Weight Plates2 Lock Collars Recommended Age: 3+