Instead of typical pens and mugs, change up your teacher and staff appreciation gifts with a Econo Color-changing Tumbler! With your choice of a silk-screened imprint on one side, you can create beautiful and functional gifts that teachers, staff, and volunteers will love--and use everyday. The 16 oz. double wall tumbler features a colored translucent outer shell, snap-on colored lid, and 9" straw. Once filled with ice-cold beverages, the inner shell changes color! Hand them out for holiday gifts, Teacher Appreciation Week, or year-end gifts. Tumblers are BPA free, meet FDA requirements, and are made in the U.S.A. Hand wash is recommended.