EASY INSTALLATION: No adhesive, no tool, no drill, no damage on your door; Just assemble two plastic halves of the cover on door knob; Make sure to align all tabs and then press to hear a snap. EASY TO USE FOR ADULTS: Don’t let kids in on the secret. The toddler proof door knob cover has holes where you can access and turn door knobs without removing the cover. This clever feature lets you open and close doors the usual way. FITS MOST DOOR KNOBS: Our Tinabless white baby proof door knob covers come in a pack of 4. They are compatible with standard round doorknobs and blend well with almost any home décor. Install them in kitchens, bedrooms, baths, etc. Perfect for homes, families, kindergartens, day care, and schools. HIGH QUALITY CHILD PROOF PRODUCT: Made of durable BPA-free plastic, these kid proof door knob covers are tougher than most. The indestructible design allows you to reuse them multiple times. Polypropylene fiber material, which is odorless, non-toxic, non-polluting. KEEP YOUR CHILD SAFETY: Worried about your child getting locked in?Baby Door Knob Safety Covers help keep your children safe by preventing little ones from opening doors or getting locked in a room and get injured. Safe is First.