The intelligent vacuum mug is equipped with touch screen for prompting real-time water temperature display. You can drink the hot or cold beverage at suitable temperature without opening and tasting. Food grade double layer stainless steel vacuum flask, best stainless steel 18/10 (SUS 316) inside, Non-slip bottom, non-toxic, No metal taste or rust. This intelligent 16 oz. thermos is perfectly suitable for daily use, running, hiking, camping, etc.