This solid back support comes with optional
gel packs to provide either a lumbar or lateral support. 

• Position two gel packs vertically to
  reduce left/right leaning

• Position one gel pad horizontally
  to provide lumbar support

• Firm back support distributes pressure
  caused by backrest hammocking

• Gel packs and backrest
  are covered in wipe-clean vinyl

• Secures to any 16-inch or 18-inch
  wheelchair, geri-chair or utility chair