30 Fitness Aerobic Step Adjust 4" - 6" - 8" Exercise Stepper With Risers Specification: Platform Size: 30.5" x 11.4" x 3.5" (L x W x H) Each Riser Size: 11.8" x 3.9" x 2" (L x W x H) Weight: 8.8 LBs Weight Capacity: 550 LBs Package Includes: 1 x Stepper 4 x Risers