This Mighty Mega Prom Travel Mug comes with our stock "Prom" imprint, so you can match it to any Prom theme. The 40 oz. travel tumbler looks and functions just like another popular mug out there but at a much lower cost, so it makes an economical Prom keepsake for your students. The 10" high super size travel tumbler is made of stainless steel on the outside and includes a plastic inner liner, a sturdy handle, powder-coated finish, screw-on, spill-resistant lid, and a 12" straw. It's double-wall constructed for the insulation of hot or cold liquids.