Meliusly Heavy Duty Sleeper Sofa Support Board (60x48 - Queen Size) Reinforced Wood Sofa Bed Support, Pull Out Couch Mattress Board, Sleeper Bar Shield, SleeperSaver

Fits perfectly under our queen sofa bed mattress, and made a HUGE difference in comfort. Can't feel those bars any more. It does feel more like a mattress on the floor than before, but so what? The mattress sucks, not the board. You can actually sleep on this sofa bed now - well worth the purchase. I store the support boards under the cushions. They don't quite reach from side to side, so the cushions are a bit off center. I might move them behind the bed, but not bothering me that much right now. This is meant to be a temporary/guest bed. If it was to be a long term bed, I would add a memory foam topper to compensate for the sucky mattress. As I said, that is a mattress problem. The bar lying under your back was a bed frame problem, and that is now solved!

Tolles Produkt! Hart, stabil und praktisch. Würde ich starkt empfehlen.

Works for us, read below, as we didn't buy it for a sofa bed We got an old mattress which is high quality and cost almost 3k yearsss back, and finally it started showing some sagging. We love our mattress to be extra firm, and at the moment can't really go buy an expensive one again and unfortunately couldn't find anything we liked for cheaper. We got an extra firm foam mattress topper to fix it (3inch height). It worked well enough, but you could still feel slight sagging under back and bum. I decided to buy this to place on top of the matress and under the topper (sandwich, so to say, and it all sits inside a waterproof mattress cover do nothing is sliding anywhere). Our mattress is queen size, this fits perfectly width wise. As for length, obviously you don't need it to cover the whole thing as it sags under or back/bum area only. But having said that, we placed the boards about 25 cm lower than the top of the matress (and it has 55cm left to the end of the matress), as it felt more comfortable. And honestly, it feels great. The foam topper is now sitting straight and does its job, no sagging, and is nicely firm (I mean, in summer I often sleep on the floor because it's cooler this way, so the firner the better). Might actually never go back to whole classic mattress setup once we get rid of this one, will just get a frame, and use these boards with a topper. Super comfy. Chose hardwood over flex option as flex seems to have a slight give which we do not need.

Good and solid, makes the sofa bed really comfortable

Worked great to make our old sofa sleeper more Comfortable to sleep in and keep the metal bars and bumps from being felt through the mattress. Nice firm bed now!