The Stanley Classic One Hand Vacuum Mug 16oz is your new best friend. Once you use this workhorse of a mug, youll never want to use anything else. This one handed vacuum insulated mug brings the thermal performance of a vacuum insulated thermos into a portable mug. One handed and fully leak-proof, you can drink your morning pick-me-up on the go one handed and with no spills. Featuring a lid that comes apart for proper cleaning, you can enjoy clean drinking day in and day out.