The The Step 31 in Fitness Step Platform is revolutionary. This essential addition to any fitness regimen is one of the best ways to up your cardio with an intense aerobic session, strengthen key leg muscles like the hamstrings and glutes, and target back, arms and chest – all without switching equipment. The aerobic Step platform (30.7 inches x 11.4 inches x 4 inches) is easy to store without taking up much space. Adjustable risers lock in under the platform, allowing you to start with an easy workout and up the intensity by raising the 4-inch platform to 6 inches or even 8 inches. This platform provides everything you’re looking for – portability, ample workout options and essential safety features. The platform can support up tor 400 pounds and has a safe shock-absorbing, nonslip surface.