Big Mike's Fitness Aerobic Stepper with Aerobic Platform Risers Included Non-slip platform : designed with special non-slip platforms to prevent any accidents and increase safety Safe for all ages : the big mike's fitness exercise stepper comes with sturdy risers to increase the difficulty level for each kind of user Heavy duty and durable - is made with a heavy duty plastic with durable risers that can support up to 275 pounds Portable : the lightweight risers allow for this product to be portable and easy to setup Great for whole body workout : the big mike's fitness aerobic stepper is the perfect tool to get a quick hard workout