Do not overlook this contigo tumbler because of its easy appearance, for it may be your best purchase yet! Its lid has an auto seal which drastically decreases spills or leaks. A slim yet large enough cup to insulate your drink is also another added bonus. Comes in a rich red or black.
These tumblers are not created just to look good, they serve a very big purpose. Thermal regulation is what makes these bottles stand out from the rest. Expect your coffee to stay warm for up to 12 hours, and your ice water to stay cold for up to 24 hours.
1) threaded insulated lid
2) narrow opening
3) double wall construction