Your curious toddler has started to get older and youll 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. Keeping your child out of harms way and away from potentially dangerous areas. Even the cleverest of toddlers will be stopped in their tracks with the Sliding Door and amp; 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, features ABS material with professional strength VHB adhesive. Curious kids are constantly exploring. Let us help you to keep them safe.