Small cards with big heads.
You should already know by now that size doesn't matter. If you are still in doubt look at the X-Ray Deck of Cards. They are smaller than regular playing cards but their heads are clearly way bigger than the previous. Each one is made of plastic, slick and they come in different kinds of uh... heads. Even though the cards are see-through the front artwork is still cleverly hidden from the back through its cool halftone style. Small cards, big heads and a lot of transparency, poker nights will never be the same.