I'm curious if anyone else is having this problem. We have a bellini crib and crib mattress. I know the mattress is supposed to be snug...when we bought it they showed us how snug it was in the store. Untl now I thought everything was fine. I didn't know the difference and had the bumper half way down between the mattress not sitting on top of the mattress ( I didn't know how it was supposed to be! ) So everything was snug, well I just tried to take the bumpers out b/c he is almost 1 and pulling them off anyway. I can move my mattress all over the crib and he got his leg stuck between the mattress and crib side. I went to bellini with my mattress and they gave me a new mattress no problem. We put the old and new ones against each other and the old one was an inch smaller on all side then the new one. So we come come and put the new one in and while it is better than the old one there is still too much room imo. So I was just wondering if anyone else has this problem??? Sorry so long!