Contigo AUTOSEAL Randolph Vacuum-Insulated Handled Travel Mug, 16 oz, Gunmetal Our Lids Are Sealed AUTOSEAL technology is leak and spill proof (Yes, there is a difference!) For the Long Haul  Drinks stay hot up to 4 hours and cold up to 12 hours with THERMALOCK Vacuum Insulation Squeaky Clean Easy clean lid completely opens for an extra squeaky clean with no separate parts to take apart or misplace Lend a Hand  Easy one-handed drinking with the push of a button Righty or Lefty Thoughtfully engineered drink spouts on both sides of the lid make this the perfect mug for both left - and right-handed users Dishwasher Safe Lid, hand wash body Limited Lifetime Guarantee