Rentals are delivered to your door 3-5 days before your event date and come with a UPS return label to send them back the next business day after your event. Polyester Folding Chair Covers from Simply Elegant are made of high quality polyester. The folding chair covers will slide over any standard folding chair. For lifetime folding chairs, you will need to use spandex or universal chair covers. For an additional touch, we recommend adding satin or organza sashes.