The Adjustable Dumbbell is an innovative, well-designed adjustable dumbbell. The Adjustable Dumbbell offers a complete set of weights in one. You can easily switch the weights between 4.5 kg and 22.5 kg (5 levels). Simply flip the lock to select the weights and you're ready to tone and tighten your body. These space-saving, sturdy and stylish dumbbells come with a weight holder that protects the floor and keeps the weights in the right position when you select them. The adjustable dumbbell helps you increase muscle strength in all major muscle groups. Combine it with an exercise ball or weight bench to get the most out of your workout.