Asatdd Bed Bridge Twin Size to King Size Bed, Waterproof Bed Split Filler, Twin Size to King Size Bed Converter, 75" x 12"

Works great no more falling in the crack

Although it did cover the gap between the beds, it still left a bump in the middle. I will have to replace the mattress with a larger one

It took a while for it to stay flat, but I put some weight at each end and after just a few hours it was fine. The filler is not noticeable when a mattress pad is placed over it. It's nice not to have that gap.

Not worth to buy , won’t fit in the gap , out of the place easily poor quality .

The Positive: thin on the top so it lays flat. Easy to put on. The Negative: the foam spacer that fits in between the mattresses is so thin that it doesn’t stay in place easily. It’s also a cheap foam, not a thick, sturdy foam, so the value for the money isn’t the best. BUT… Overall, this would be good for a filler between two very squared-edged, firm mattresses, but our mattresses are pillow-topped and not firm, so it has a lot of space on the underside - so for us, the functionality isn’t great.

Perfect

Absolutely love this it has made a huge difference 👏

This does the trick to bridge the gap in the twin mattresses of my daybed when I set it up as a king bed. Although it stays in place, if you are a wild sleeper, you may want to use a mattress cover that keeps the bridge protected from kicking it out of place. It feels soft and durable and I bought a 2nd one for my new sofa-bed