A 38-in rebounder for cardio at home, folding flat when the workout is done. Thirty-two steel springs spread the load evenly around the rim, which is what keeps the rebound consistent whether a landing is centered or off to one side. Six legs bolt to the frame with screwed joints rather than push-fit sockets, so nothing works loose over months of use. Non-slip rubber pads under each leg hold the frame on a hard floor, and a protective cover hides the springs so a foot cannot catch one. The frame carries a 330-lb rating.