Stanley Master Flask 1.3L

HOTTER LONGER. TOUGHER FOREVER.
Meet the Master Series. The best of the best, designed to be above and beyond what your average Joe needs to enjoy his joe (that's American for coffee!). Our thickest steel. Our best thermal performance. Being a Stanley Brand, you know it's Built for Life. Being a Master Series, it's built for Life and then some.
The Master Vacuum Bottle 1.3 litre (1.4 qt) is made for the toughest of the tough. For those who demand the very best in durability and performance.

QuadVac insulation keeps drinks hot for 40 hours (based on FDA standards), cold 35 hours or iced 160 hours.