TMS 30" Aerobic Step Aerobics Trainer Adjustable Exercise Fitness Workout Stepper Condition: Brand New,Color: Black+Gray+Red.Material: PVC. This 30'' exercise stepper will help you work on your coordination as you improve your cardiovascular fitness.The secure, non-slip surface can ensure you exercise easily and safely. Our aerobic step can be used to target your hamstrings with alternating lunges and also help you to strengthen your chest and back by pushups. Height is adjustable from 4'', 6'', and 8''. Ideal for cardio workout or to strengthen your lower body. Features: Easy to maintain and keep clean. Lightweight for easy transportation. Stackable for easy storage. Heavy-duty polypropylene material and advanced injection molding technology. Ideal for cardio workout. Perfect for indoor and outdoor use. Shock absorbing, non-stick, non-slip surface. Up to 8 Specifications: Overall dimensions : 31 1/4 Package Includes: 1 x Stepper (with 4 risers)