Designed to transport smaller aerobic platforms (approx. size 29"L x 14"W x 4"H) 2" high risers. Stores up to 12 steps and 48 risers (Fitness Step Model #KRM7C) Six vertical bars safely store accessories such as jump ropes and resistance loops. Made of high impact, structural grade PVC plastic. Heavy-duty, ball bearing swivel casters with locking, no-mar wheels. Dimensions: 35"L x 20"W x 63"H