Titan Adjustable Aerobic Stepper 4" 6" 8" 10" w/ Risers Gym Exercise Step 16" W Sturdy Design and Durable Construction - Easy to Store 300 lbs Weight Capacity Non-Skid, Non-Slip, Shock-Absorbing Surface for Safety - Use at Home or in the Gym - Excellent Quality, New Design Step: 4" Tall x 16" Wide x 16" Long; Each Riser Adds 2" (Maximum 10" Tall) - Risers: 4" Tall x 16" Wide x 16" Long - Adjustable Heights: 4", 6", 8", 10", 12" Weight: 11 lbs.