??HOT 6 HOURS, COLD 12 HOURS??Our insulated cup can keep hot coffee for at least 6 hours, and keep ice water for at least 12 hours, you can enjoy your hot drinks or cold drinks until last sip. ??CAN BE PLACED IN CAR CUP HOLDERS?? Bottom diameter is 2.7 inch, DUEBEL tumbler cup fits most car cup holders. When you are driving, one hand can open the lid to drink, but, be careful, not to be scald by the hot coffee. ??LEAK-PROOF & SPILL-PROOF, CARRY IN BAG??DUEBEL best coffee travel mug has excellent leak-proof and spill-proof features, and, the height is 6.5 inch, portable, you can just put it in your bag ( please make sure the lid is tightly closed), suitable for business or travel. ??DOUBLE WALL INSULATION, ANTI-SCALDING DESIGN??304 stainless steel body, double-wall insulated travel mug, inner wall insulation, outer wall anti-scalding. Additional, it has sweat-free design to make sure your hands stay dry. ??DISHWASHER SAFE & CAN WASH BY HAND IN??Our dishwasher safe coffee travel mug is easy cleaning, dishwasher safe with 100% BPA-free & toxin-free, and, the top diameter is 3.5 inch, bottom diameter is 2.7 inch, you can wash the insulated coffee cup by hand in.