The 18" Adjustable Mini Step Platform by The Step is one of a kind. 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 out equipment. The mini Step platform (18 X 11 X 3 Inches) is so easy to transport and store and takes up very little space. Adjustable risers lock in under the platform, allowing you to start with an easy workout and up the intensity by raising the 3" platform to 5". Additionally, the size of this step makes it the perfect piece of equipment for home or office use. The platform can support up to 330 pounds and has a safe shock absorbing, nonslip surface. This product is backed by a 90-day manufacturer's warranty period.