Make the transition from crib to big-kid bed easier than ever with this Serta Perfect Sleeper Extra Long Foam Bedrail Bumper! This foam guardrail prevents your child from falling or rolling off the bed while still allowing them the freedom to get in and out on their ownit also allows parents to sit while reading bedtime stories or cuddling. Installation couldnt be easier: simply unroll the bed bumper, allow it to expand, and slip it under the sheets on any twin, queen or king-sized bed. The bumpers non-skid silicon bottom and top ensures the rail stays held firmly in place yet its super-easy to remove when making the bed or changing sheets. A water-resistant and a removable machine-washable cover makes cleaning up easy.