Our most feature rich mug to date, the Stanley Mountain Vacuum Switchback™ 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 18/8 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, and as with all Stanley products, comes with satisfaction guaranteed Built for Life™ lifetime warranty. Read more.