Seven Colors Toddler Bed Rails Features: High-quality metal frame, soft and durable cloth mesh. Easy set up and lifting smoothly,no stuck. Double lock safety design, press the button to unlock. Lovely 3d embroidery picture design, stimulate the baby's vision. Vertical liftable, no need move nightstand, it is very convenient. According the mattress thickness to adjust the bed rail height. Warning: After insert under the mattress, Please use the "Y" safety strap or screws and hook straps to make more safe. Please do not leave children alone when they wake up, avoid climbing Bed rail, this bed rail is only a function tool to stop falling down when baby are sleeping. Attention: one side bed rail in package. PLEASE INSERT BED RAIL UNDER MATTRESS, THEN USE THE "Y" STRAP AND HOOK STRAPS TO FIX STURDY. AND SET THE BOTTOM SUPOORT BAR CORRECT HEIGHT, CLAMPING THE EDGE OF MATTRESS. Upgrade version bed rail for toddlers * Easy to lift and low with one hand * No need move nightstand * One side lift no stuck * Works with all kinds of mattress and beds * Easy to get in and out of bed * Adjust correct height, no gap, no risk Read more DOUBLE SAFETY LOCK, CORRECTLY ADJUST HEIGHT CHILD LOCKS double lock, safety design. press both buttom same time with Index finger and thumb , avoiding children to unlock. CORRECT ADJUST HEIGHT according the mattress height, must correct adjust the bed rail height. there are 8 gears height, do not set the tube too low, keep no gap, avoid stuck danger. MORE CONVENIENT, TRIPLE-SAFE MORE CONVENIENT more convenient get in and out of bed, do not need move the nightstand. TRIPLE-SAFE must connect the "Y" safety straps to opposite of the bed, and tight the hook straps or screws.