Why you need it: Are you concerned that your child might accidentally lock themselves in a room while playing? Are you worried about the risks of your child or pet opening the door unsupervised? With our childproof door lock cover, you can install a rotating back-lock deadbolt and avoid the risk of your child accidentally operating the deadbolt. Keep your baby safe and gain peace of mind. Hidden switch design, difficult for children to operate: This childproof door knob cover requires fingers to press the button inward and then slide it upward to open. It is easy for adults to operate—one hand is sufficient, even when holding a child or carrying items—but difficult for young children to understand. This effectively prevents children from locking themselves inside and becoming frightened when no one can open the door quickly. Simple installation: No drilling or tools required. The deadbolt cover features a non-marking adhesive backing that can withstand a 15-20 pound pulling force, ensuring that your baby cannot pull it off. Environmentally friendly and durable: Made from eco-friendly and harmless materials. Strong applicability: Includes four protective covers for deadbolts, suitable for multiple doors around the home. Compatible with most standard door deadbolts on the market. Please measure your door’s deadbolt before purchasing to ensure proper fit. Material: Plastic Color: Black Package Contents: 4 x Deadbolt Covers Note: Light reflection and differences in display screens may cause slight variations in the color shown in images. Measurement allows an error of +/- 1-3 cm.