Cresci Products Window Wedge, 4 Pack

These work really well. I wish they came with extra velcro, as I'd like to be able to attach them to multiple windows, and move them as necessary. Simple and easy to use.

Works good. If your window gets used alot I'm not sure this would be the right fit. The windows I have these on are for safety for my grandson.

The people who invented these doohickeys are geniuses! So simple and effective. I'm using for security reasons on vinyl windows; works like a charm, and as a previous reviewer wrote, you'd have to be a gorilla with a lot of time to get past these. I think they would work on sliding vinyl windows, too.

The actual stopper not very strong attached to the Velcro, my 4 year old can easily take it off without an effort.

performs as advertised

Not sold on these that they would even slow an intruder down.

I never bother to write reviews for things, but these are so cheap and so effective and so versatile that they deserve five stars even from me.

Easily removable by my 4 yr old.