Thermos Ultimate Flasks combine a sleek, lightweight design with maximum heat performance technology.Designed with two part stoppers and a protective, shock-absorbing silicone ring to soften the impact if dropped.
- Thermos vacuum insulation technology for maximum temperature retention, keeps hot for 24 hours and cold for 24 hours
- Stainless steel interior and exterior featuring protective silicone rings for high durability
- Cool to the touch with hot liquids, sweat-proof with cold
- Two part stopper to smooth the flow of liquids