100 % SEALED AND LEAK PROOF: Auto seal technology automatically seals between sips to prevent leaks and spills; lid-lock prevents the Auto seal button from accidently being pushed while on-the-go ICE COLD OR PIPING HOT: Thermalock double-wall vacuum insulation keeps temperatures locked in for hours; drinks stay hot up to 5 hours or cold up to 12 hours, on the go, in the office or outdoors DURABLE: High-quality travel mug, BPA-free plastic lid and vacuum insulated stainless steel body; the sweat proof design makes sure your liquids stay in the thermal mug, not on the outside EASY TO CLEAN: Dishwasher-safe lid hinges open completely for easy cleaning (one piece, no separate parts to take apart or misplace); hand wash vacuum flask body IDEAL FIT: The sustainable and environmentally friendly stainless steel thermal mug fits into all common car cupholders; size 9.2 x 8.9 x 19.7 cm