Achieve total-body fitness with The Step Original Aerobic Platform - Circuit Size - a residential, compact platform from the trusted leader in step fitness. This set includes a grey nonslip platform and two original black risers to create the foundation of any workout program. The original circuit-size platform features a 28.5? x 14.5? x 4? inches stepping surface with a grooved, non-slip surface for added safety. Burn more calories the higher you step with 4? to 6? platform height options using the 14.5? x 9.5? x 2? risers. Each riser and platform are made with four non-skid feet to prevent sliding or moving during exercise. These sturdy risers can be used on any type of indoor flooring from carpet to concrete to hardwood without leaving behind scratches. Each platform and riser also feature a resistance band notch, which safely holds the band in place. Made in the United States, this set is crafted from durable, recyclable high-density polyethylene that supports up to 275 pounds (or up to 400 lbs. with risers). This product is backed by a 90-day manufacturer?s warranty period.Technologies: ?Features a wide 28.5? x 14.5? x 4? inches stepping surface ?Great home-fitness tool for beginners to experts ?Customizable for a variety of aerobic and strength exercisesDurable Construction Made in the United States of America ?Crafted from durable, recyclable high-density polyethylene ?Supports up to 275 pounds (or up to 400 lbs. with risers)Grooved, Non-slip Top ?Stepping surface with a nonslip grip for added safetyAdjustable Riser ?Includes four 14.5? x 9.5? x 2? original black risers ?Compatible with freestyle and original platforms and risers ?Burn more calories the higher you step with 4? to 6? to 8? platform height options ?Risers made with four nonskid feet to prevent sliding or moving during exercise ?Can be used on any type of flooring without leaving behind scratches