This is NOT an insulated glass.
It will break by sudden changes in temperature such as putting hot stuffs, placing directly on a fire or putting in a refrigerator.
The insulation temperature of the main unit is 104°F (42°C); the insulation temperature of the lid is 104°F (70°C); the insulation temperature of the lid, and the gasket is weak to heat, so please do not place it in a high temperature location or use hot water.
Please take the glass with you when carrying. Do not use in microwave, oven, freezer, dishwasher or dish dryer.
This is not an airtight container. Lying down will leak inside.
The lid may be damaged if used with foods that are strong acidity, so please wrap the lid in the bottle mouth before putting the lid on.
Also, please note that the lid may be damaged if it comes to high concentration of alcohol for disinfecting purposes.