GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 70 Sofa, Thick Plywood Boards Add Strong Seat Supports, Stays in Place, Replacement Stuffing Under Couches, Gray

Well first off this is very sturdy. I think it's going to last a long time. It's well made and the material is very durable plus the boards in it are very thick. It fit perfectly and there is a little play in length because of the space between the boards so I was able to make it fit into end. And honestly this made my sofa feel like it was new again. So firm and no more curving my end of my back because of the Broken Springs. I am very happy with this and would highly recommend to anybody. And it was very easy to use and install.

This product is amazing. My sofa looks great. I have a sofa bed that doesn't offer much support under the cushion. This was easy to to install. I used it along with a memory foam cushion under. I can't believe the difference. This would work just fine on a sofa that doesn't have a bed in there. Mine needed some extra help as the cushions would sink in a bit because of the extra space on a sofa bed. It's nice to receive quality product.

Huge difference when I easily install it on my couch. We’re not sinking in the couch when we sit and can easily get up off the couch. Very sturdy and a lot of support. It gave our couch and loveseat an extended life and prevented us from buying a new set. Highly recommended.

I never really write Amazon reviews, but honestly felt that I had to share how great this purchase was.I think too many sofas are too soft in general, and you end up sitting very low, which hurts my back. As I bought a refurbished sofa, it turned out it was slumping quite a bit. But this product made it feel like new with a firm seating. The cushions still make it feel comfortable, just feels like someone replaced all the springs at the bottom of my sofa.Got it for my west elm three seater, works like a charm!

I was surprised at how well this worked on my 20 year old couch. One of the length-wise wire springs broke right in the middle, and this product helped immensely without making it feel too stiff. The cushions still need more shape, but this device isn’t designed to help with that. Overall, it’s a very good buy. The size was perfect.

I was skeptical at first but this item really rejuvenated our sinking couch. After about 6 months of use i haven't noticed any cracking or sinking of the planks and I'm about 230lbs.. very happy with this product and it's durability!

Very sturdy. Quite hefty so you know it will provide needed support. It was very easy to put on the couch—just unfold the accordion sections and replace the cushions. I feel that the support is like sitting on a new couch now.It does make sleeping on a well-loved couch a bit awkward at first because you feel like you’re angled forward a bit, but I got used to it, lol.

I purchased an inexpensive couch two years ago knowing it would not be a long term solution since I did not know what I wanted at the time. Two years later and I still don't have a vision for my family room. The couch exterior still looks great but I felt like I was sinking to far down into the couch when I sat and wanted something to firm up the cushions. This product was my solution. I a pleasantly surprised by what a difference it has made. I no longer fall deep into the cushion when I sit down and it gives the couch a firm feeling. My only wish is that there was a little thicker cushion on the support boards to give it a little more "cushion" feeling. Overall I really like this item and intend on purchasing another set for my Loveseat.