Innovative Door Knob Safety Cover: Our baby safty door knob cover is a game-changer! Special hidden holes covers design, when you need to open the door, rotate the tail to open the hole cover, grasp the door knob through the holes and turn the knob Special Installation/Removal: No Screwdriver, no harm to the door! First the hole cover is open, then pull out the lock cover, use two thumbs to separate the product into two halves Prevention is better than cure: Deter children from opening doors or getting locked in a room with a door knob cover. Strong snaps and double protection lock are hard for child to remove Safety & Eco Friendly: Made of Eco-Friendly ABS material, safer and strong. The simple design with the nice appearance suit for the home environment good and will not affect the use of the door HEOATH: We are committed to meeting customer demands to create the finest products. Any suggestions and request please feel free to contact us in anytime that we can try our utmost to reply in short time Child Safety Door Knob Cover