Math equation - pi - waterproof sticker Stock: waterproof glossy vinyl sticker Size: 3 x 1 inches This sticker is perfect for customizing your tablet, water bottle, laptop, tumbler..... stickers are permanent, waterproof, weatherproof, and printed on the highest quality vinyl. If using the sticker on a tumbler/mug/cup, please hand wash only. How to order Please choose quantity. Delivery All vinyl stickers will be mailed by usps first class mail with a regular us postage stamp. If you would like to have tracking information with your purchase, please message me and i'll be glad to set up a custom listing for tracking. Terms All images/illustrations are copyright of heirloom ink All designs are for personal use only.