Send messages or personalize your Drink in the Box with Scribble on the Box. Contains 4 dry-erase crayons, 8 stickers. Extra stickers let you replace worn out stickers. Washable (hand wash preferable, but can be gently washed on the top shelf of the dishwasher). Specifically designed for use with the Drink in the Box (sold separately), a revolutionary patented designed reusable drink box. It’s safe, completely chemical free, easy to clean and comes in 4 beautiful colors. Drink in the Box is the world’s only reusable drink box, is patented, BPA and Phthalate-free, won’t squirt or leak, and helps to hydrate your kids without all the sugar and risk of mold, or impact to the environment of a disposable juice box. 12oz capacity. 100% spill proof. Square shape fits into lunchboxes. Dishwasher safe. BPA and Phthalate-free. Made from USA-Tritan.