Yes & Know Invisible Ink Trivia Game Book: Spectacular Sports

The original invisible ink activity books are back, and better than ever! 36-page book contains classic Yes & Know games, plus trivia, fun facts, puzzles and more, all about sports. The Yes & Know pen features full-color Surprize Ink technology and "magically" reveals invisible clues and answers as you fill in the pages. Terrific for travel and rainy days, plus anyone who loves sports. For ages 7 and up.