High density sponge door anchor will not scratch the door and door frame. Detachable sponge pad around your waist to provide more comfort and protection. Exquisite leather band end,fine stitching,durable reinforced band provide max load-bearing capacity: 200kg/440lb. Easy to install on door frame,outdoor single parallel bars or fitness equipment. Convenient to adjust the band length to adjust the difficulty. Suitable for home,yoga,dance,fitness,ballet and gymnastics etc.