A functional Prom favor that's also flashy and fun, this Custom Geometric Prom Super Sparkling Tumbler lets you add the perfect touch of glitz and glam to your Prom event. The clear acrylic tumbler with a lid and straw holds 16 oz. and is double wall insulated to keep beverages secure. A fancy insert featuring our Geometric Prom design and the word "PROM" is featured as shown between the two walls. The insert is available in your choice of shiny or holographic finish and can be customized with your school name, theme name, or other text in the color and typestyle shown, so you can create a stunning, unique Prom keepsake your students will love.