Amazon.com : POWERT Aerobic Step Adjustable 43” Stepper Platform with Risers Included for Aerobic Exercises—4”-10” Adjustable Height-Pink & Grey-4 Risers/6 Risers (4 Risers) : Sports & Outdoors
Amazon.com: The Step (Made in the USA) Original Health Club Aerobic Step Risers in Black for Use with The Step Aerobic Platform – Health Club Size (2 count)