The Bodum Lipstick Travel Flask was originally produced in plastic with a glass insert back in 1983. Bodum has redesigned it as part of their 60th anniversary celebration. Today’s Lipstick thermos is made of double wall stainless steel, making it unbreakable. The push button flow control valve makes it easy to use, the lid acts as a cup, and to top it off, it will keep beverages hot for up to 6 hours. capacity: 34 oz (1L)