MiiR Insulated Travel Tumbler with Locking Flip Lid ($33 at Amazon) We liked the overall design, insulation, and size of the MiiR Insulated Travel Tumbler. However, we found a design flaw with the ...

The RTIC Essential Insulated Tumbler is made of 18/8 stainless steel ... We’re not entirely sure what it is about the Miir Camp Cup, but it just feels good to drink out of it.

Take note if that’s an important factor for you. The MiiR Travel Tumbler is my personal favorite travel mug. I own the smallest size (12 ounces) and love the compact build and sleek shape.