We moved our daughter to a regular bed at 1 1/2. She was learning to crawl out of her crib. But, we didn't go to a toddler bed, we didn't want the added expense of 2 beds, so we bought her a big girl bed, and she slept on the mattress on the floor until she stopped falling out. Then, we put it on the box spring. She has trouble getting in and out because it's so tall, but...she doesn't fall out. We pushed it up against 2 walls to keep her in at least 2 sides, just in case, but later, all we'll have to do it buy a frame. But, if your little one is climbing out of the crib, you should get her in a bed...she could really hurt herself by falling from the crib.