Our little one is growing so fast - I know that in a few months she will be ready to go from her crib to a toddler bed (and THEN a big girl bed!)  We are ready with these conversion rails!  I don't want to be frantically trying to find them when the time comes for us to convert the crib - I like being prepared.  These shipped fast. Haven't put it together yet....I'm crossing my fingers it's easy.