Zojirushi SlickSteel Finish Stainless Steel MugSM-KHE 36/48Zojirushi's stainless steel vacuum insulation mug will keep your beverages hot or cold for 6 hours. The compact design takes minimal space and fits in all standard cup holders while maximizing capacity. The flip lid is designed to open with a single hand. The flip lid is tightly fitted for excellent heat retention and features a safety lock to prevent accidental opening. These mugs have a stainless steel interior with SlickSteel finish. Utilizing electro-polishing technology, these products are non-coated on the inside and instead use an electrically charged polishing process to treat and finish the interior. The result is a corrosion resistant surface that repels foreign substances and stains, creating a smooth and ultra-clean stainless steel environment for your drinks.SM-KHE Travel Mug FeaturesBeautiful Sleek designStainless steel vacuum insulation keeps beverages hot or cold for hoursDurable and sanitary 18/8 stainless steel interior with SlickSteel FinishSlickSteel Finish interior resists corrosion and repels stainsFlip-Open lid with safetly lock prevents the lid from opening accidentallyTight fitted lid keeps beverages hotter or colder than travel mugsCompact design takes minimal space whilemaximizing capacityHow does it keep beverages hot or cold? With Zojirushi's renowned vacuum insulation technology, air between the two thin layers of stainless steel on the outer container is removed, creating a vacuum. Because there is no air, the temperature on the outside does not transfer into the container; keeping your beverage hot or cold for hours.About Zojirushi SlickSteel Finish Zojirushi SlickSteel Finish is an alternative to our fluorine nonstick coated products. With the ever changing trends of today, Zojirushi innovation continues to produce choices for any lifestyle. SlickSteel is a registered trademark of Zojirushi.Designed to drink directly from the mugStopper disassembles for thorough cleaningWide mouth accommodates full size ice cubesZojirushi America Corporation warrants only the thermal insulation of certain vacuum insulated products against defects for a period of five years from the date of original retail purchase