Best job ever. #nurselife. Let a great nurse know how much you appreciate him or her with a gift of this travel tumbler. Made of high-quality 18/8 stainless steel, it keeps hot drinks hot and cold drinks cold for hours. Holds about 20 ounces. Finished in navy blue on the outside. The clear heavy-duty plastic lid includes a sealing ring to reduce spills, plus a sliding mechanism at the top that easily opens or closes the drink opening. To care for tumblers, hand wash only and do not microwave.