Our Lids Are Sealedﾃつ- 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ﾃつ- 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ﾃつ- Thoughtfully engineered drink spouts on both sides of the lid make this the perfect mug for both left - and right-handed users