Furniture Fix - Set of 6 - Support for Sagging Chair Plastic Imported Dont throw out your sagging sofa - give it couch support! Engineered couch fixer supports heavy use on sofas, chairs and beds too! Give your sagging sofa cushion support with like-new firmness The fast, easy way to fix saggy mattresses, cushions and more Dont settle for couch boards when easy-to-assemble, interlocking furniture fix will give you the lift your furniture needs.