When you use this ceramic mug, you will feel like you're in front of the best campfire, enjoying a hot beverage and watching the stars overhead as you get away from it all. That's what Wisconsin is all about, especially in the summertime! At 13 oz, these sturdy mugs hold a generous amount of whatever you have in there. (not my business what you put in). They advise you to hand wash to prolong the design and they are microwave safe.