The Safety 1st Extra Long Bed Rail offers the best value solution to help children make the switch between a crib and a bed. The safety rail locks automatically when in the upright position, making it very safe and simple to use, with easy access to the bed when folded down. Features: Automatic locking in upright position for safe daily use Very stable thanks to wide frame under the mattress Compatible with mattress Dimensions: Dimensions L x W x H: 150 x 45 x 3 centimetres