I really like these bags to keep my keyfobs in. They help against the accidental starting of vehicle while in my purse. Also help so you don't accidently set off the alarm while in a crowded parking lot making everyone look at you. They are larger than what I thought they would be so I can fit my keys in it as well if I don't have all my keys on the ring. I also really like the hook on the bag as I can attach it to my belt loops so it can't go missing. I just used this while at a fair and knew I wouldn't loose them.