RTIC 30 oz Ceramic Lined Insulated Essential Tumbler, Leak-Resistant Lid, Graphite

It's a little big! LOL but I love that the interior is ceramic. It's well made. It's dishwasher safe. It looks nice. The lid stays on fine but it would be better if it had owalas smoothsip design. I guess you can't have everything. That said, I would probably go with the 20 oz tumbler if I could do it again, especially one with a handle. Lastly, it fits in the cars cup holder fine.

The inner ceramic lining really prevents contact with the metal, which was the main feature I wanted. I was happily surprised that it truly doesn't leak, as advertised! There are so many beverage carriers which make that promise, but the item leaks anyway. I've only had this for about a month, so I hope it remains leak proof over time. There is no handle on it %26 it's a little difficult to carry. I put it in a carry-bag with other items, such as my purse %26 library books, so it's very important that it doesn't leak.