Bicycle playing cards

what's the difference between normal bicycle playing cards and bicycle 808 playing cards?

The 808 cards are probably what you think of as normal playing cards. The 808 signifies that they are regulation poker sized cards.

Bicycle is the brand that makes the cards, like Aviator or Bee, and they produce many other kinds of playing cards besides 808, like mini cards, jumbo cards, and glow-in-the-dark cards.