New in box 1 side only Sturdy and Stable: FAMILL new updated toddler bed rail provides a large U-shaped base, provide a larger force area for added double stability and security. The base is designed to avoid slipping and shifting, seamless design that tightly presses against the mattress, no worries about getting stuck or falling off the bed, create a safe and comfortable sleeping environment for your baby. Easy to Install: Our bed rails for toddlers come pre-assembled, only connect support base and U-shaped base and secure it to the bed. Say goodbye to the hassle of complicated pieces assembly. Unpack it and can be installed within 2 minutes. Enjoy the convenience of our easy-to-use toddlers bed rail. Easy Access: Our toddler bed rail is designed for easy access, with a simple one-side or two-sides lifting mechanism that allows you to get in and out of bed easily. Our bed rail for toddlers is designed to be used without drilling, no damaging for bed board. Perfect Fit for most Beds: Our toddler bed rails come in various sizes (39" - 82.7"), adjust to fit different mattress heights, making it a great choice as bed rails for queen bed, bed rails for king size bed, california king size bed, rails for full size bed, bed rail for twin bed. Warm Tips: Before purchasing our bed rail guard, please measure the size of your bed and mattress to ensure you select the correct size. Our toddler rail is sold as a single rail per order. For better stability, we recommend purchasing 2-4 side rails.