your kids. so not only do they have a nice bag to carry their head phones in, or to store so they are not thrown about in your vehicle. there is also the great splitter cable so there is no arguing over not being able to hear.
i would also like to add, that they come in a wonderful assortment of colors. so you don't have to worry about any arguing on who's head phones are who's. you can just get different colors for each child. 