Sling-Fill™ Base  

ABS plastic insert with molded ribs that fill in the sag of soft wheelchair upholstery.  Creates a flat, rigid foundation for improved patient comfort and positioning.   One size fits all.  Included standard with all Isch-Dish cushions, and available as an accessory to all other cushions.  Fits into sleeve sewn into all covers on cushions with "-96" suffix.