Nicole Miller aerobic step exercise fitness equipment comes with 27" x 11" wide platform and a set of risers to adjust height between 4" and 6" This workout step made with high-quality ABS material features a textured, non-slip surface and supports up to 550 lbs weight Nicole Miller stepper is ideal for cardio workout, fitness, low and high impact; challenge your workout with two adjustable height Use this exercise steps and risers to tone your legs and arms, or strengthen your core; exercise with it at home, work or gym Backed by Lifetime Limited Warranty and friendly US customer service, buy this Aerobic Step with confidence