Show your pride in your career! This colorful nurse tumbler is a unique way to show off and has the added benefit of being personalized so that you don't lose your tumbler! I Became a Nurse Because Your Life is Worth It. 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 designed and printed individually in-house using a process with UV Printing.