CONTIGO AUTOSEAL TRAVEL MUGThe claim: "The Contigo is the first travel mug that automatically seals between sips and is the only travel mug you cannot spill. Autoseal technology can be used with one hand using the trigger button; push the button to drink and release it to seal automatically."
Testing. . . 1, 2, 3
The cost: $14.99 to $19.99 (depending ...