Simple length of tailored foam padding material that fits to the base of the front seat frame under the seat cover skirt, softening the look of the frame and protecting the cover from damage. Made in the U.K. by Newton Commercial, sold each. Ref: SF660.
From the manufacturer:
This is just a simple item, but when fitted to the base frame of your seat frame under the seat cover skirt, it will soften the look of the frame and protect the cover from damage.