K.B.
I wish I had a gotten a low one like my friend. Basically, most are built so that the railings are up to your mid-chest, which means you are uncomfortably reaching over and down, with the top bar hitting you on your tender underarm. But the lower ones only come up to like your waist, so you reach down without hitting any part of your body. They are still safe, since the mattress will just be lower to make sure the kid can't jump out, but it's more comfortable for you. As you shop, test it and reach down in, lower any movable rails and see how well it works for you. Congrats!