Never spill another drop with this 100% spill and leak proof mug from Contigo. The travel mug uses exclusive auto seal technology to prevent accidental spills and it's vacuum-insulated providing exceptional temperature retention, keeping beverages hot for four hours or cold for 12 hours. To use, simply press the button to sip, and release the button to automatically seal. The contoured body makes this mug easy to hold and easy on the eyes. BPA free. 500ml.