We tried coffee tumblers from the biggest brands to finally settle the Stanley vs. YETI debate. Here's what we learned.

Any mug with a lid that you can carry from place to place is technically a travel mug, but the best travel mugs keep your iced or hot beverage to temperature, won't leak all over your bag ...

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.

A popular option for travel mugs is the Yeti 20 oz. mug. It comes in dozens of colors, from bright beautiful ones to more muted classic options. The 20 oz. cups come with an easy-grip handle ...

The new FreeSip Tumbler adopts more of the same ... ergonomic grip so you can really keep it on hand at all times. Made to fit cup holders, it can stay within arm’s reach on your commute.

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise.