Our most feature rich mug to date the stanley mountain vacuum switchbacktrade mug features thermal performance and usability in any scenario grit guard covers your drink surface during travel the overmolded finger loop carries with one finger or easily clips to packs our push button lid lets you open drink and close with one hand this mug is built from 188 stainless steel vacuum insulation that is car cup compatible and dishwasher safe never worry about a leak when you toss the mug in your bag