Giantex 31'' Fitness Aerobic Step Adjust 4" - 6" - 8" Exercise Stepper W/risers 30" Adjustable Aerobic Stepper: Giantex 30" adjustable aerobic steeper will help you work on your coordination as you improve your cardiovascular fitness. The aerobic step can be used to target your hamstrings with alternating lunges and also help you to strengthen your chest and back by pushups. High-Denisty ABS Material: Constructed of ABS material. Feature with impact resistance, top and supports up to 550 lbs, this aerobic stepper also great for workout classes and regular home use, you can work out anywhere in your home, office or take it with you to your friends' home! Height Free Adjustment: Challenge your workout with 3 settings of adjustable height (4, 6, 8). Up to 8 of adjustable height for level changes. Free assembly and disassembly. You can raise or lower the height according to self requirements. Anti-slip Design: Giantex Aerobic stepper design with honetcomb black technology surface, Better skid resistance compare with others. Also comes with four nonskid feet on each riser to prevent it from sliding during exercise and scratching floors. Versatile Stepper Platform: Provides excellent traction on any floor, Each Riser Size: 11.8 X 3.9 X 2 (L X W X H).Use it in the comfort of your own home or take it with you to your next outdoor, aerobics class.