Evelots 21&rdquo; Adjustable Cushion Support Seat Saver for Chairs, Recliners- Small Cushion support extends the life of furniture by adding support to sagging furniture, making it more comfortable and attractive. Save money by getting additional life out of your current chairs and recliners. Seat saver features adjustable panels that can be folded or unfolded to fit any incremental width from 4.5W to 21W (fully extended). The support is 18.75 deep. Easy to use, no tools required. Just unfold and place seat support under sagging cushions for instant firmness. Made of quality plastic with a protective layer of black vinyl, this seat saver is easy to spot clean and designed to hold up under daily use. Comes in black. Extra support can also improve posture and reduce aches and pain caused by sitting on sagging furniture. Trusted vendor. For years Evelots has provided unique products with a 30 day easy return policy, and 100% satisfaction guarantee.