From the introduction in the product:
Condition Cards have been designed as a game aid for players and gamemasters alike. They have been formatted to print on any standard-size business card paper, or you can just print them on cardstock and cut them out using the lines as guides.
Keep the cards handy and whenever your character is struck blind by a spell, knocked prone by a powerful blow, or simply invisible thanks to a handy potion, you can pull out the requisite card and - voila! - you have all the information you need to handle any adjustments to die rolls, combat stats, skill checks, etc.
The condition cards presented here differ from our earlier set of condition cards in that they have been designed for compatibility with the Pathfinder Roleplaying Game from Paizo Publishing, LLC.