Trek Tumbler

The tapered base actually slides into my car's cupholder instead of wobbling around like my old cup. Ice was still rattling around after a full morning of errands. The clear straw is a nice touch too, since I can see when it needs a rinse.

Took this on a 3-hour drive and it fit my cupholder perfectly, which is rare for a tumbler with a handle. The lid hasn't leaked once, and I like that they threw in two straws so I could keep the clear one for my iced coffee.

Took this on a hike and the lid didn't leak in my pack, which was my main worry. Only gripe is the handle makes it a bit bulky for smaller cupholders, but the two straws were a nice touch.