So one of the reasons our commercial dumbbell set is popular is because it can give users an enhanced workout experience. First, the set can span all levels of fitness and everyone--making it an asset that grows with your increased effort. Second, the dumbbells are not only rugged but also corrosion resistant and wear-resistant thanks in part to its strength. In this way they will provide years of trouble-free service life. Third, an entire set of exercises can be streamlined by using this kind of workout gear containing both dumbbells and a barbell. It enables one person to work his entire body and gets a number of different muscles into play--more efficiently than free weights at the gym do for instance; so versatile is this system. Fourthly, The safe shoe designs among other things--such built-in features make it ok for solo use on your own or group classes. The net result is that these advantages come together to make a practical and efficient solution to a wide range of fitness goals.