This is a vacuum hybrid container designed to keep 2-liter PET bottle beverages cold or hot. 【Size】12.5cm x Height 23cm 【Material】Body: Stainless steel, Lid: Polypropylene 【Color】Blue Gray 【Capacity】2 liters ・Can store one 2-liter PET bottle vertically (※Some 2L PET bottles may not be compatible) ・Shoulder strap makes it easy to carry ・Even if the pressure inside the container drops due to a decrease in temperature and it becomes difficult to open, you can easily open it by pressing the button on the lid several times. I tried putting a PET bottle in it. The cooling is perfect.