I love this mug even more than the large black-glazed mug I got late last year. It is the exact same size as the smaller teapot I use at home and holds the tea hot longer, even! Also, a 14.9 oz. pressure can of Guinness fits perfectly in the mug and I'll bet it will stay at perfect porter temperature (52 deg. F) longer too! My thanks to all in the greater Samson family, and stay safe.