Elementary school teachers will be very impressed with the durability of this "Teach Like A Boss" Glass Bottle. When they receive those teacher appreciation gifts they like gifts that are functional; ones that will get a lot of use. This 18 oz. glass water bottle definitely meets that criteria. Made of strong borosilicate glass with a metallic rose gold sleeve, the bottle features a wide mouth opening (great for ice!), carrying strap, and a screw-on, spill-resistant lid. The "Teach Like A Boss" design is printed on one side of the sleeve in black. BPA free. Meets FDA requirements. Hand wash recommended. NOTE: Note for hot liquid use.