Suspension training builds superior muscular balance, joint stability, mobility, and core strength helping you perform better in any sport. It also improves posture and prevents injuries. Now you can get your full TRX workout anywhere there’s a door.The Door Anchor’s nylon, high-density foam, and felt system slips easily over the top of any solid wood or metal door and, when the door is shut, offers 100% sturdy support. It won’t scratch or damage paint or wood, and it folds up for easy storage and portability. And there’s a handy “Workout In Progress” safety placard included; just hang it on the outside of the door.Warranty: 1 year against manufacturing defects. Suspension training builds superior muscular balance, joint stability, mobility, and core strength helping you perform better in any sport. It also improves posture and prevents injuries. Now you can get your full TRX workout anywhere there’s a door.The Door Anchor’s nylon, high-density foam, and felt system slips easily over the top of any solid wood or metal door and, when the door is shut, offers 100% sturdy support. It won’t scratch or damage paint or wood, and it folds up for easy storage and portability. And there’s a handy “Workout In Progress” safety placard included; just hang it on the outside of the door.Warranty: 1 year against manufacturing defects. SPECIFICATION: Brand TRX Usage Home Use, Commercial Use Condition Brand New