Come and see our amazing products. Double Walled Vacuum Insulated Water Bottle can keep beverages hot or cold for hours. The air between two thin layers of SUS316 stainless steel make up the body of the mug a vacuum. Because there is no air, the temperature on the other side of the wall does not transfer over, keeping beverages hot or cold for hours. Tea cup lid design makes it very convenient to enjoy the drinks in the bottle for a happy trip. Pls confirm further with us if any query about packing info, inventory status and time schedule.