Check the listing for details. 16" x 16" Adjustable Aerobic Step Platform with 4 Risers Extra Risers Workout. Color: Grey&Black, Condition: New. Listed at 27.59 USD. Specifications:Color:Grey+BlackItem Weight:5kg/11.02lbsPlatform Material:HDPE+PVCBody & Risers Material:HDPE+TPRLoad Capacity:125kgs/275lbs1-layer height: 14.5cm/5.7inch2-layer height: 19.5cm/7.67inch3-layer height: 24.5cm/9.64inch4-layer height: 29.5cm/11.61inchPlatform Size:40*41*29.5cm/16.14*15.74*11.6inchFeatures:NON-SLIP PLATFORM: Slip-resistant, shock-absorbing high step aerobic platform with 1 additional removable risers, provide a steady, safe, space-efficient and comfortable step workout experienceEASY HEIGHT ADJUSTMENT: Increase workout difficulty and tweak your aerobic exercise routine according to your fitness level by adjusting platform height from 4” up to 12” using 4 additional stackable risersHIGH-DENSITY POLYETHYLENE MATERIAL: Constructed of recyclable, high-quality polyethylene material, High Step Aerobic Platform can support up to 275 pounds, perfect for both low and high-impact step exercisesCONVENIENT TRANSPORTATION: Lightweight, compact and easy to install, you can takeAerobic Platform anywhere you want, be it the gym, your workplace or your home