The Contigo Autoseal Luxe thermal mug is a real eye-catcher. The 360 ml capacity vacuum-insulated stainless steel thermal mug keeps drinks hot or cold for hours and stands out from other products with its high-quality, dishwasher-safe metallic finish. Autoseal technology automatically seals after you're done drinking - making the mug 100% leak-proof. The lid can be locked when not in use to ensure the button isn't accidentally pressed during transport. Thermalock double-wall vacuum insulation keeps your drinks hot for up to 3 hours or cold for up to 10 hours. At the end of a long day, you'll appreciate that the bottom of the lid is easy to open for thorough cleaning. The lid and bottle body are dishwasher safe.