DETAILS & CONSTRUCTION: Heavy-duty, durable steel for quality, long-lasting performance Adjustable back rest allows for versitility for knee raises and ab crunches Designed to keep back rest in place during exercises Versatile design allows you to incorporate push-ups, sit-ups, chin-ups, triceps dips and verticle knee raises into your workout Folding dip arms add versatility and clearance for pull-ups Forearm pads provide comfort and support during exercise Maximum User Weight Capacity: 300 lbs.