Outdoor Bar Stools How Do You Recover Seats Of Wicker Bar Stools With Permanently Attached Cushions ?

How do you recover seats of wicker bar stools with permanently attached cushions ? - outdoor bar stools

These are the wicker chairs for the use made in the open. Seat cushions in weather resistant material and the cushions are securely affixed to the back of the chair.
I would like to recover this outdoor fabric with fabric in my kitchen decor game. I need ideas of how this is done without the ability to remove the pillow.