Ask any serious bodybuilder; free weights are hands-down the best tools for increasing your strength and muscle mass. They open up a huge range of exercises and, as opposed to machines, engage a lot of additional muscle groups to keep the balance Each muscle group requires a different weight, and with your Ativafit dumbbells, you can select just the right amount in seconds. You can literally put your progress on speed dial. With one hand only, you simply slide the lever to the preferred setting. Any remaining weights will be left in the base plate. Giving you the versatility of 5 sets of standard dumbbells, your Ativafit set saves you on the initial outlay cost as well as being much more compact to store! With superior design and build quality, it should come as no surprise that Ativafit are leaders in the U.S. market. While other adjustable dumbbell models have a plastic locking system Ativafit utilises a secure high-tensile steel design Comfortable and secure grip control is provided by the contoured soft grip handle design. Make the home of fitness yours today!