Back support covers come off for washing more often than most people expect, especially where there is incontinence, drooling or a feeding tube in the mix. This is the spare outer cover for the Spex Manta back support, so the chair does not have to sit idle while one is in the machine.
The Manta cover is part of how the support works, not just upholstery. It wraps the shell and the built in lateral trunk supports as one piece, and it can be turned end for end to set the laterals higher or lower on the client. A spare keeps that option available while the original dries.
The zip runs around the rear edge, so the cover comes off and goes back on without wrestling the foam insert. Fitting the spare is a task a carer or support worker can manage.
