there is not much in description. It says can help reshape your body and mind, maximizing your energy while keeping you motivated. The firm method is a revolutionary idea combining weight training and aerobics in such a way that you can maximize your ability to burn fat and calories. super-efficient workout that you can do in 30 minute.but it require to do with firm box and dumbbells.But i was using like a little step and purchase very cheap dumbbells from Marshall's like 4-5$