Just place Furniture Fix under a cushion or mattress for an instant lift. It's a great way to give sagging cushions like-new firmness. Furniture Fix extends the life expectancy of your furniture by providing needed lift to cushions and the frame of your furniture with specially engineered panels that support heavy use. Panels interlock instantly, and when fully assembled, will fit a regular size chair. You can customize to fit any width or depth of a chair, love seat, couch and beds from twin to king size by connecting multiple panels. Furniture Fix is perfect for students in dorms, apartment dwellers starting out or those on a fixed income not looking to replace old furniture. No tools needed.