Covers wear out well before the cushion does. Zips fail, seams go, and a client ends up sitting on a cover that has stretched enough to bridge across the air cells, which quietly undoes the pressure redistribution you prescribed. This is the standard replacement cover for Star air cell cushions.
The textile cover is cut to sit over the cells without tensioning them, so the cushion can still immerse the buttocks and envelop the bony prominences the way it was set up to at fitting. It comes off for washing and goes back on without needing the cushion to be re-inflated or re-set.
This one suits Star Standard Air, StarLock and Stabil Air cushions. Replacing a tired cover is one of the cheapest things you can do to keep a working pressure care setup working.
