You will receive a Christmas card as a gift for Christmas Day. The security lock window restrictor is designed to limit the opening distance of windows and doors to help reduce the risk of injury from falls. Suitable for most casement, wooden, PVC, aluminum, and sliding windows, both horizontal and vertical. Safe solution to prevent children from pinching their hands by opening or closing windows and doors without supervision. Helps prevent babies and children from accidentally falling out of windows or going out through doors. Effective protection for both children and pets. Adjustable window restrictors allow ventilation while keeping spaces safe. Two opening size options: 5.12 inches (13 cm) and 6.30 inches (16 cm). Easily switch the circular knob to adjust the opening gap as needed. These window limiter locks come with strong adhesive for secure attachment without drilling. Simply peel off the protective film and attach directly to windows or doors. Optimal adhesion is achieved after 24 hours. Easy to remove using a hair dryer without damaging the window surface.