Check the listing for details. High-Intensity Step Aerobic Exercise Platform Nonslip with 4 Risers Exercise. Color: Black, Blue, Condition: New. Listed at 40.58 USD. Features：Ideal for workout classes, recovering from an injury, or everyday regular workout routines in the comfort of your own home, office or take it with you to your friends' home, to help you keep fit and enjoy your aerobic exercisesPlatform textured surface is secure, non-stick, non-slip, and shock absorbing, ensure you exercise easily and safely.Vary workout difficulty by adjusting platform height from 4 to 12 using risersThis system includes a blue High Step platform, four black risers, and instructional streaming videos to create the foundation of any workout program. Burn more calories the higher you step with 4 to 6 to 8 to 10 to 12 platform height options using the 16 L x 16 W x 2 H risers. Specifications：Material:HDPE+PVCOverall size: 16.14 * 15.74 * 11.6inch1 layer height: 5.7inch2-storey height:7.67inch3-layer height: 9.64inch4-storey height: 11.61inchThe above floor height includes the main pedal height (i.e. the main pedal is equipped with one riser)Load 125kgs / 275lbs