Trek Tumbler - Signature

I was skeptical about the straw lid being truly leak-proof, but after tossing it in my bag sideways with coffee inside, not a single drop escaped. The double wall insulation keeps my drink hot for hours without the outside getting too warm to hold.

The straw lid really is leak-proof—I tossed it in my bag with coffee inside and not a single drop escaped. Plus the double-wall keeps my iced tea cold for hours.

The tapered bottom actually fits my car's cupholder, which my old tumbler never did. Closed the straw lid and tossed it in my bag sideways—zero leaks. Ice from my morning coffee was still there at lunch.