A versatile weight trainer! Drop them, kick them, throw them, step on them! You’ll have a great workout because SandBells™ are made to be abused to give you the best possible workout. SandBells™ are a combination of a sandbag, a dumbbell, a barbell, a medicine ball, a slam ball, a balance pad, and a kettlebell. They are great for stabilization, grip strength and can be thrown and caught safely. Shipped filled with sand.