Tenive Adjustable Aerobic Step Protable Stepper Platform Exercise/Workout Step with Risers, 27" Sturdy environmental PP construction and advanced injection molding technology insures no harm to human health Great for all levels workout classes indoors to help for training endurance, strength and improve overall fitness Height is adjustable from 4'' and 6'' through the attached risers convenient for control intensity of training Portable and lightweight frame easy to transportation and storage Max Capacity: 551.25lbs Net Weight: 5.5 lbs