Leave it to OXO to improve on the insulated travel mug! No more spilling your hot or cold beverages while travelling. Designed to be opened and closed with a one handed click, so you can keep your other hand on the steering wheel. This travel mug has 3 silicone seals to prevent leaks and the double-walled cup with vacuum insulation will keep your liquids hot or cold for up to 7 hours. 18-ounce capacity mug measures 8.75" x 3.2" diameter. Not intended for dishwasher or microwave. Don't fill with carbonated beverages.