I have a little girl that will be 5 in January. She sleeps on the top bunk and has for a few months, and isn't afraid of the ladder. We attached towel rods to the side of the ladder to give her more room for her hands, and she even does well climbing down in her sleep. My daughter doesn't wear socks in bed so I can't say she would if she did have socks on. She loves laying up there, and she was scared at first, but I slept with her one night up there and now she is no longer scared. It has a little bit of a guard rail and not very high but she is a calm sleeper and we put her "babies" towards the edge she can roll off on and she hasn't.