Why you need it: Are you concerned that your child might accidentally lock themselves in a room while playing? Worried about the risks of a child or pet opening the door unsupervised? With our childproof door lock cover, you can install a rotating back-lock safety deadbolt and prevent accidental operation by children. Keep your baby safer and gain peace of mind. Hidden switch design – difficult for children to operate: This door knob cover requires fingers to press the button inward and slide upward to open. It's easy for adults to use, even with one hand while holding a child or carrying items, but challenging for young children to understand. This helps prevent children from locking themselves inside a room and becoming frightened when no one can enter promptly. Simple installation – no tools required: No drilling or screws needed. The cover features a strong, non-marking adhesive backing that resists pulls of 15–20 pounds, ensuring your child cannot remove it. Just peel off the protective film and press firmly onto the deadbolt latch. Ideal for renters—won’t damage doors and leaves no residue when removed, keeping your lock surface clean and undamaged. Environmentally friendly and stylish: Made from safe, eco-friendly ABS material with a durable shell and smooth finish, free of sharp edges or corners to protect your child. The sleek black and clear design blends seamlessly into bathrooms, bedrooms, children’s rooms, playrooms, or living areas, combining functionality with modern aesthetics. Wide compatibility: Includes four door knob covers. Each measures 3.14 x 1.57 x 1.57 inches with an inner diameter of 1.57 inches, fitting most standard deadbolts. Please measure your deadbolt before purchase to ensure proper fit.