It is good and sturdy. If you install it properly, on a clean and smooth surface, it never comes off! It is elastic, so it needs to be stretched when fastening, and then you hope it doesn't come off due to tension. We use it on a large cabinet and fortunately, so far, our little one (21 months old) cannot open it. But he's getting close...

It has proven to be somewhat safe. (our child of 1 year) But the cabinets open up to five centimeters and the little fingers can fit in and get caught.... It requires supervision as well.