The RTIC Essential Insulated Tumbler is made of 18/8 stainless steel and is nice and big, but it still fits in a cup holder. The mug comes in 20, 30, and 40-ounce options. The lid on the Tumbler ...

There are plenty of travel mugs to choose from out there—from the cheap plastic kind sold at your corner convenience store to ...

Yeti's biggest straw-lid option holds 42 ounces ... story based on her personal experience with Stanley and Yeti insulated tumblers, as well as the results of our in-house tests.