Nurses do so much and are often taken for granted. Our Caduceus 20 oz tumbler is the perfect way to say thank you to a special nurse, or buy for yourself and be proud of your profession. 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. 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.