1.Aerobic Stepper 2.Size: 68x28x10-15cm(two hights adjustable),Color: black+grey 3.Packaging: 1pc/normal color box, 3pcs/Ctn 1.Aerobic Stepper2.Size: 68x28x10-15cm(two hights adjustable),Color: black+grey3.Packaging: 1pc/normal color box, 3pcs/Ctn4.multiple height adjustments for different exercise routines.large surface area for optimum usability