Got these as a gift for a friend. She loves them. We like that they can hang on your purse strap when they are curled up and locked. Makes them easy to find- so you will actually use it! And she likes to hang them on the outside of her purse as a charm or decoration. Having multiples means you can just leave one in each purse and always have one when you are out.  And we haven't had any trouble in all the places weve used them. They always fit the tables.
Almost gave 4 stars because one of the designs is kinda tacky, but thats just our opinion. :-)