Great for separating car and home keys
So you start your car and realize you forget something inside your (locked) home. You turn off the car so you can use your keys to unlock the door and retrieve your forgotten item. Then you go back to the car and start it up again. If this describes you, you need one of these. But you probably already knew that since you are reading this review. These work great and are also useful for other things. I put one on my daughters swim team bag so she can quickly detach her membership card and re-attach it to her swim team bag when she checks into the YMCA. They seem well made and do not detach by themselves - which is good. Very convenient item that everyone should have.
Rating: 4 stars