Padded design: Features neoprene-padded footrests for comfort and ankle support plus a padded clamp to avoid damage to your door. Easy to use: Slides under the door and tightens on with a clamp. Fitness equipment: Get a door sit up bar. Dimensions: 283mm x 86mm x 133mm. Three adjustable heights: Adjust the ankle rests to suit your needs, creating the perfect height for sit ups and crunches. Quick release: Can easily be removed and stored away when not in use. Door Sit Up Bar | Living Social