Weather Proof, Very Durable, Easy to Read, Printed in Color, 2-Sided. This Photobert CheatSheet for Canon Speedlight 580EXII is laminated waterproof and very sharp and clear. It's like having the manual on a card - but better! Almost everything in the Canon manual is on this one card. This CheatSheet is an easy to take with you invaluable quick reference. It's printed on both sides of a full-sheet of paper that's laminated with a heavy 10-mil laminate and is folded in thirds. When folded it's about 4.5 x 7.75 so it stores easily.