Bicycle Marked Deck For Infrared Contact Lenses
Bicycle playing cards are probably the most common playing cards, at least here in the United States. I prefer to do magic tricks using Bicycle cards, because they do not make people suspicious like a deck with an unfamiliar back might.
In my book, Trick Decks, I show how to mark your own Bicycle deck with a Sharpie, but to use it, you have to memorize the code.
If you are lazy and want an easy-to-read deck, get the Ultimate Marked Deck, available with red or blue Bicycle backs. The cards look and feel exactly like a regular bicycle deck, but you can instantly read the suit and value of any card with a quick glance at its back.
Historically, the company that makes Bicycle cards has not made marked Bicycle decks, so this is kind of a big deal in the magic world. It is pricey, but you can do some amazing tricks with a marked deck.