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.

My couch has been sagging really bad taking a toll on my back. I’d been putting off buying one of these support systems. I wish I’d done it sooner! The immediate noticeable improvement! Now instead on fighting for my life to sit upright on my couch, it actually holds everything up. It adds some firmness as well. It’s well made, not cheap at all. The size is good, my couch is a little over 6ft long so I bought the largest option and it fits nicely. Also easy to use I just opened the package and unfolded it so there was no assembly.

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 was really on the fence about basically buying some covered wood but am pleasantly surprised. I have a slightly oversized sofa and everyone tends to sit in the same spot causing a gradual dip in the couch. I put this down and it helps TREMENDOUSLY! It's a little narrow compared to size of my sofa so roughly once a week I have to slide it back up against the seat back. It has texture grippers but it does start to slide to the front. Not a big deal because I fluff and rotate my cushions once a week when I vacuum my living room. It has made the dip level again but isn't too hard or uncomfortable and feels really sturdy. Very glad I purchased it. I'd highly recommend it when if you just purchased a sofa to prevent any high-use dips in your couch.

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.

Perfect, what a comfortable item.Helps me with my bad back to stand up. Instead of falling into the low spot on our sleeper soft.Thank you all.

Very firm. Made sofa feel new again. Solved sagging problem. Good thickness.

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!