Your curious toddler has started to get older and you'll need to stay a step ahead of their discoveries. Help prevent him or her from opening sliding doors and windows with the Toddleroo by North States® sliding door and window lock. It installs easily with no tools needed and is multi-functional, working on glass or wood surfaces. A simple slide and release motion activates the wings to lock, keeping your child out of harm's way and away from potentially dangerous areas. Even the cleverest of toddlers will be stopped in their tracks with the sliding door and window lock, which went through rigorous testing of safety standards. Keeping in mind all of your safety concerns when it comes to your little one, this lock is non-toxic, eco-friendly and features ABS material with professional strength VHB® adhesive. Curious kids are constantly exploring. Let us help you to keep them safe.