The design of the travel mug is super similar to the RTIC Insulated Tumbler: double-wall insulation, stainless steel construction, and a screw-on closure lid to prevent leaks and spills.

These rugged tumblers are a compact alternative to a certain other buzzy brand, shoppers say — and they're truly leakproof!

Any mug with a lid that you can carry from place ... This was a tough call in our best travel mug with a carry loop The Klean Kanteen Insulated TKWide actually beat out the Hydro Flask in both ...

It's so well insulated ... Cup checks all my boxes: It's a koozie for both bottles and cans, a sleek little substitute for a cocktail glass, and, conveniently, Hydro Flask's wine tumbler lid ...

And then, of course, 16 ounces is somewhere in between. The type of lid on your travel mug can make a fairly big difference in how you experience drinking. Some have bigger openings, some smaller.