Hey, remember the Book It! reading program from your childhood? Bring back the memories with this nostalgic Book It! Sticker. For the love of personal pan pizzas and foil stars, add this sticker to your collection! Measurements: 3" in Diameter Waterproof and Weatherproof Premium Vinyl: Our stickers are professionally printed on waterproof and weatherproof durable vinyl. Great for cars, windows, phones, laptops, hard luggage, water bottles and most any hard, smooth surface and are dishwasher safe.