AliMed® Front Anti-Tippers w/Bumpers Front anti-tippers help prevent the wheelchair from tipping forward. Easy to mount. Wheelchair safety can be further improved with the use of rear anti-tippers.Innovative new design places plastic bumpers on the front of the anti-tipper to make them “wall and furniture friendly”. Stops scratching of walls and furnitue. Bumpers also leave your walls clean after contact - no skid marks. Specify Left or Right.