SMRTFT NUOBELLs are a space and time saver. They make your home look better and provide a more efficient workout. You do not need to buy many different dumbbells to have one workout. In fact, when you consider the cost involved with buying multiple weights, SMRTFT dumbbells are frequently a much less expensive investment. When comparing NUOBELLs to other adjustable dumbbells, you never have to worry about storing extra plates or taking plates on and off loadable handles, as these adjust at the twist of your wrist! All unused plates stay situated in their cradles. To adjust to a new weight, simply place the dumbbell back into the cradle, and twist! These provide a much more efficient, aerobic workout than loadable dumbbells. We are here to help you get stronger and fitter in a more effortless, more efficient manner!