I’m really happy with my Theologian Book stack tumbler. The quality is very good. I really enjoy the logo. It brings a little extra joy when I pick up the cup. I also appreciate that it is easy to clean. The lid especially is easier to clean than many I have tried from other places. It’s a screw on lid and is plastic while the cup itself is metal. The design is simple, reducing crevices that are hard to clean. It works well. The tumbler keeps hot beverages nice and warm or cold beverages cold. It will hold plenty! I don’t necessarily need to fill it up. I usually just fill it about halfway and it still works well. The large handle makes it easy to carry. I also like that the logo is simple and somewhat understated. I think that might interest people and make them curious, which could open up some interesting conversations! I would definitely purchase this again. I also recommend it for a gift.