The MiiR products are incredible. I already had the travel mug. Although it looks thin and as if it won’t insulate well, it is the best insulated mug I’ve tried. I can pour my coffee in it, and by the time make my 30 minute commute to work, it is still too hot to drink. Even 5 hours later my coffee will still be nice and warm. I’m expecting the same from the growler and I’m sure it won’t disappoint. It looks awesome and is durable yet light.