Microbiology Puns | 20oz Skinny Tumbler | Fun Gift for Microbiologists, Infectious Disease Professionals, Teachers

This item is a 20 ounce sublimated tumbler with some silly microbiology puns. It's perfect for an infectious disease specialist, a micro teacher, a lab technician, or anyone who lives bacteria (maybe a coworker who leaves their lunch in the fridge for too long). These tumblers are double-walled metal tumblers. They keep drinks cold for hours. In my tests, they kept ice outside in 94-degree heat for at least 6 hours and ice indoors for at least 10 hours. Tumblers come with a plastic, slide-close lid and straw. If used with hot beverages, you should vent the top (open the little straw slot) so they don't build up pressure. The seal is so tight, steam can cause the lids to pop up. They are not microwave or dishwasher safe. These tumblers are sublimated so the ink is permanently bond to the tumbler coating. It's not a sticker or vinyl. I put mine in the dishwasher all the time with no ill effects, but detergent used in dishwashers can be abrasive and scratch and chip coatings (ev