"Made from cellulose acetate, the world's longest-lasting playing card material, Kem cards will always spring back to their original shape, even under the most rigorous playing conditions. Kem cards are also almost impossible to mark or crease. Kem cards have earned their title of "the world's finest playing cards." KEM cards are virtually indestructable. You can not mark, bend, scuff,dog ear or tear these cards. KEM cards are washable and will always look like new. This will be the last deck of cards that you ever purchase. KEM cards are standard in most fine casinos. The sticky cardboard cards just dont cut it if you want to have a game with class. It is estimated that KEM card will outlast regular paper cards by 100 times and other plastic imitation cards by 20 times. So this deck of KEM will be both a status symbol and thrifty investment. This deck also comes with its own plastic case to protect your investment for years to come. It is "regular index" and "standard sized".