The Safety 1st Portable Bed Guard in Dark Grey helps protect toddlers from bedtime tumbles. This breathable guard rail creates a nighttime barrier with an automatic lock that folds for easy entry, so little ones can comfortably switch to their first big-kid bed.With a compact fold, you can take the Safety 1st Portable Bed Guard on the go, for extra nighttime security anytime, anywhere.Compatibility For standard and slatted beds in single and toddler bed sizes. Extends from 71cm to 107cm in width.Compatible with mattresses from 156cm to 190.5cm in length, and between 10 cm to 23cm in depth.