By very popular demand Mayday are releasing a new sleeve! Please note these are the same thickness as most of their sleeves.
These are designed for cards of 63.5 mm X 88 mm, or 2 1/2″ x 3 1/2″ . They are 100 per pack and priced for bulk purchasing (cheap).
These sleeves are GREAT for card games with a lot of cards that stack. This thickness works best if you have over about 75 cards in a pile. Any thicker and they simply fall over and difficult to shuffle due to the thickness.