The product packaging was badly damaged in shipping. There were several holes, and it looked like a truck had run over it multiple times, purposely. However, the boards survived.

They are not solid boards as much as they're seven covered slats. But there's some kind of filling on top, so it's not just covered slats.

They fit a queen bed perfectly. I put them UNDER a 5" box spring to raise the height a little and provide extra support for the box spring, and, in turn--the mattress. Nice difference. I don't sink in as much, everything is firmer in the right way ("gives back more") and both the mattress and box spring are more supported. You can get an even firmer feel by putting it directly under the mattress (on top of the box spring, or no box spring at all), but this defeats the purpose of the box spring. That's not a big deal if you have a foam or hybrid mattress. But for a traditional innerspring mattress, like I have, you want the box spring right under it--and this board underneath that!

Four stars for comfort and improving my sleep, despite the fact that it's really covered slats and the shipping damage.

The bunkie board lives up to its boast of not having the mattress slip and slide. It actually hold the mattress in place. I'm impressed.

Recently got my toddler a big girl bed that has metal support. I have been down this road before and thought I should get a foundation anyway. I put it under her mattress and laid on her bed to test it. I'm still laying here typing this review because it's so comfortable now. BUY THIS. I'm not gonna call my husband in the room to try this out and convince him to put one down for our king size bed that "didn't require a foundation"

Worked perfectly

It's great, lightweight, and compact. They save money and are incredibly low profile. The only thing is, because they come in two separate boards for one twin bed to support, the boards can separate in the middle. If you can live with that, then you're fine. There are multiple ways you could try and secure these boards together, but then they could possibly not let the bed lay flat/smooth. If you absolutely need them uniform together as one, I don't recommend (but I couldn't find any other very very low profile twin support that was uniform and low cost). If you can live with that slight separation, then definitely recommend. The twin beds we got were very heavy (which helped hold down the separating boards) and the bed frame slats/bars were few and too far apart to justify any support. We needed a super low board support that would not make the bed height go over the side rail limit. This worked for us, just as regular care we check the boards while making the beds. They hardly ever separate too much with the weight of the bed.