Product Details Return to Top Overview Finally—a thermos that won't leak in your backpack, purse or bag. Just press the grey button to pop the top when you're ready to drink. Close, lock and go when you're through. Double walls and vacuum insulation mean your coffee stays hot for six hours. Easy-sip lid prevents spills, no matter how rugged your trek. Dent resistant, unbreakable, and perfectly practical for people on the move.