How deep is the lip that you drop the mattress into?
887592
The seller's answer is inaccurate. There is less than two inches between the slats (where the mattress rests on) and the top of the sideboard. In other words, the frame conceals only 2 inches of the mattress.
58349
I would say six to eight in. Lowered the bed nicely, at least for us it did.
2155698
Yes, our mattress is 7 or 8"s deep, but not a Sleep Number. This topper is outstanding. The part that goes down the sides can fit snuggly under the mattress and it does not move! The owners are great people; all veterans. Made in the USA! Excellent topper and we've had it for almost a year now.
244348
The depth where the mattress sits in to the top of the side slats is about 5 inches
1395394
It says 15-18 in drop, but because it is elastic, you could probably cheat it down lower and let the bed spread cover the difference. If you look closely at the picture, you can see two bands of elastic that hold the ruffle in place. It fits around the box spring, not under the mattress, so you can pull it down as far as you like.
959758
I would suggest a 5 inch if you want to replace the mattress with the lucid foam. The 4 inch might be a little thin. I think it would work though.
346177
There is a slight lip, I don't think it is as deep as 1/4 inch; I've had no problem with it protecting my screen and I've dropped it several times.
689741
Physically measured at 14.5" to elastic. Should be adequate for 12" deep mattress.
1596799
There's a lip... But it keeps the baby from rolling out if there is a slight gap between the co sleeper and the mattress. Best thing we bought for the baby!
891025
It is probably too low. I have not measured from floor to upper edge of mattress, because some creepy Amazon algorithm contacted me out of the blue to answer this question and I am therefore not invested. But it is definitely low. An infirm person would need assistance. A solution might be to provide that assistance.
836676
The mattress is about 2 inches, but after some use, it does not look that thick. It flattens out.
1110760
The deepest depth of mattress should be 5 1/2" to 6". Other wise it is to high on guard rail. Would be dangerous!
344330
We got a 7" foam matteress and it is still below the lip of the bed. 6 inch should be fine.
2001290
Probably a little too deep. My mattress is 18" and fits easy. How this helped
1050057
About 1 in. Makes a tremendous difference and keeps the mattress cool. You need it for the foam am trees otherwise it becomes hot.
983818
It's at our vacation home. I'll measure it the next time I'm there. I can tell you it's too low for the matching bed.
491794
just guessing here maybe 1/2" not over plush but just right for me. I bought it more to protect the mattress more than for comfort.