This graduated beaker beer mug features a prominent "Be" periodic table square, for one of the most powerful elements known to science-BEER Handled glass features calibration marks in milliliters allowing you to pour precise volumes of your desired brew - 600ml mark designates a 20oz pour, max capacity 28oz Lab-grade borosilicate glass is oven, microwave, fridge, and freezer safe - Drink Periodically glassware is the real deal A perfect gift for the STEM dudes or lab girls in your life - medical pros, teachers, and science enthusiasts of all stripes will appreciate this clever conversation starter, for use or decoration Drink Periodically offers the original and the best novelty periodic table drinkware, in a variety of styles and sizes - wine glasses, beakers, and laboratory flasks with unique element tabs Size-600ml/20oz