We will have to move DS to a bed when the new one comes, and he will only be 18 months (and everyone has told me to wait until he is 2 until he goes into a new bed). However, we found this really cute one from IKEA that is really close the floor, just in case he rolls out... haha.. so with the low bed and a side rail, we figure that he should be ok. He might get out and everything, but usually we still pat or rub his back until he goes to sleep, so hopefully he won't get out too often. (And hopefully he will be walking by then so if he falls out he can get back in .. haha!)