Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you! Keeps Your Toddler Safe: You will have peace of mind knowing your toddler cannot wander outside the minute you turn your back. Our sliding door locks limit and stop the opening of sliding doors and windows so your little one stays safely inside. Strong And Easy To Use: Made of durable ABS plastic. Our locks pop up and down easily to lock and unlocked doors quickly. Installs In Minutes: Our door locks are very easy to install. Simply clean the area for the lock, remove the 3M tape backing and press onto the desired location for up to one minute. Works On Many Surfaces: These door locks work well on most wood, glass, plastic, and metal surfaces. You can childproof your patio, closet, shower, storage, and entertainment center sliding doors as well as your sliding windows. Versatile Design : The babyproof lock is designed to blend seamlessly into your home without taking up much space, and can be used on doors, cabinets, drawers, and windows, among others.