Enjoy your drink anywhere and at any time. The Qwetch thermos bottle keeps your drink warm for 12 hours and cold for 24 hours. It's the perfect solution for savoring your hot or cold beverage on the go or at home. The Qwetch thermos bottle is a great alternative to plastic bottles. It features a double-walled design with both the inner and outer walls made of stainless steel 304 (18/8). The inside of the lid is also made from stainless steel 304 (18/8). The inner wall is uncoated and unpainted, unlike aluminum containers, ensuring that it does not alter the taste or aroma of your drink.