Windows are second only to doors when it comes to security vulnerabilities in a house. They are easier to open from both outside and inside. So the safety of your family is likely worth this investment in our sliding window limiter. Sliding window locks can be easily applied to sliding windows to give children environment. Features - Material: Plastic. - It can prevent children from opening the window too large and causing , safe to use. - Can fix the window in place and cannot be pulled or opened, effectively anti-theft device. - You can use the window locks to fix the window, it can prevent children from falling and prevent thieves. - The sliding window limiter can prevent children from opening the sliding door and turning . - Great for rest homes, shopping malls, hospitals, schools, offices and homes, etc. Package list: 4 x Window Lock Stoppers