Trustic Armchair Cushion Support for Sagging Seat [ 21 x 22], Chair Saver, Sag Away Solution, Under Cushion Adjustable Bamboo Board Inserts, Heavy Duty, Extra Sturdy, and Thick 0.47"

Restore Sagging Furniture: Breathe new life into your favorite couch, chair or recliner with Trustic cushion supports. Offering an instant lift, they improve the appearance of your furniture and can even help extend its lifespan.
Adjustable Sizing: Measuring 21" wide, our inserts offer more coverage than standard cushion supports. Five removable bamboo slats allow you to customize the length/depth from 3.3 " to 22, " making it compatible with smaller chairs or sofas.
Easy Installation: To set up your support, simply slip it under the sagging cushion. The boards can be placed perpendicular or parallel to the springs depending on your chair, but we recommend perpendicular placement for better weight distribution.
Reliable Support: While similar products are made with MDF, plastic or cardboard, we opt for heavy-duty bamboo. As strong as it is durable, it can hold up to 400lbs, offering incredible comfort, firmness and proper posture support.
Premium Quality: Expertly crafted with natural and sustainable materials, our supports last up to 10x longer than competing products. At 0.47 " thick, they' re famously sturdy, yet remain hidden when under the cushion.