3 inch waterproof bookish sticker! All stickers are printed on waterproof matte vinyl & then covered with waterproof laminate. While all stickers are waterproof, if placing stickers on water bottles/tumblers, hand washing is recommended SHIPPING INFO Tracking for this item is not guaranteed. While you will still receive a tracking number, it is not a typical tracking number & cannot be tracked through USPS. You can upgrade to full trackable shipping at checkout for an additional cost. In A Relationship With Books Sticker