If you want a few more shots of espresso, our 20 oz. Coffee Flask is just right. This flask delivers your daily caffeine fix without the disposable cup. TempShield™ double wall vacuum insulation keeps your chai tea latte hot for up to 12 hours and your cold brews icy for up to 24. Whether morning will be spent around a cozy campfire or commuting to the office, the 16 oz Coffee Flask will make the day a little brighter.