Your grad will love this fun insulated tumbler! Kiss my (cl)ass Goodbye! Include a name and the graduating year to make this a memorable and unique gift they will cherish. Enjoy our 20 oz Insulated Tumbler for yourself or as a gift to someone special in your life. Our tumblers feature double-wall vacuum insulation with a clear lid. The mug has a narrower bottom to fit most standard cup holders. It is BPA and lead free and is constructed of 18/8 gauge stainless steel. THIS IS NOT VINYL! Each tumbler is printed individually using a process called sublimation which creates a permanent design that is embedded in the cup and will not wash or wear off.