Most kids can't open it Children can open other items, they can't provide the safety protection you need. Our zipper requires adults to press the button on the side of the zipper Easy to Use - Both men and women can easily open and close with one hand, just use two fingers to open the zipper. lock and simply press the side of the release button to close it.Installation is very simple: no need to use splicing tools, just use the included 3 glue to stick it on the door. To remove the blockage, use a hair dryer to heat the 3M sticker and peel it off easily, without damage or mark on the door. Improved door lock function: no child can lock you in the room. The only way to lock and unlock the lever is to press a button.The lock on the door handle is made of upgraded ABS material (mixed with 20% PC to increase hardness) and better 3M adhesive (17N/100MM), which will not be easily broken or damaged. removed by children, In order to guarantee children's high safety.How to installStep 1 Start by cleaning the installation grass, lock the position on the door and make sure the handle is in the middle, then mark the position with a pen.Step 2 Peel off the hearing protection filmThe third step Press firmly for about 10 seconds, then finishStep 4 Stick the lock on the door surface according to the position indicated in step . When the baby grows: remove the lock from the door handle Many parents want to be sure that the security solution they choose is not only effective, but can also be undone after the child grows without losing the body.Share the following tips for removing the handle lock: During the test, the following instructions allowed us to avoid damage to the seat belt and the door: Remove all security guards from the door lock: Lift the rope and move it from left to right.