We have taken the best features of water bottles, coffee mugs and of course, shaker cups and re-designed the game. Introducing Flatout’s multi-purpose 20 oz (591 ml) double-walled insulated cup. Vacuum insulated keeping your cold drinks, COLD and your hot drinks, HOT. A spill proof lid that is easy to open and secure enough for shaking. As important, it’s stainless steel, non-odor absorbing and easy to clean. Now you will only have to carry one bottle, mug or cup (however you decide to fill it) throughout your day.