I'm a very seasoned coffe drinker and love the cute mugs to just make my mornings feel like a vibe. I went with the 5.4oz mugs because I love gran lungos, and filling the glass up to the brim with the creamer is just a perfect and cozy feeling. The glass itself is very lightweight and has handled hot to cold temperatures very well due to it being tempered glass. My favorite has to be the aesthetics, there's just something about that double glass look, it looks so elegant like I'm at a coffe shop.