Kids R Us Swing Down Bed Rail. This bedrail is perfect for those restless little sleepers. The swing down feature allows the rail to swing down out of the way when not in use. This makes it very convenient for making the bed. This bedrail has an all-steel construction to make it very sturdy and durable. The Guardian has a 20 inch sidewall that accommodates thick mattresses and is 43 inches Long for added security. The Exclusive Gap Guard feature prevents your child from sliding between the mattress and bedrail. This bedrail fits up to a queen size mattress. It is extremely easy to set up with no-tool required which makes this the perfect hassle free bedrail?