i got one of those one day. it was came in a box of unknown origin, the box was slightly larger than the item itself. it was made out of a material, has a top side and a bottom side, works well with the similar item designed to match with it. indeterminable size, but slightly smaller than the box it came in. it has a color, a texture, and a shape. it does things, and it doesent do other things.
all in all a good buy, you can find them at places and they cost about the same as some other items.