Very good idea,I do like it and I take them with me when we are travel or in the restaurant.But there is one thing I don't like is they don't give you chance to choice color.I have a baby boy and received one purple color one green color,so when ever we go out I will have to leave the purple color at home,It would be nice if the color is same as the picture or you can choice the color,so I will have one for back up.