1. Recommended temperature of use : 0~50°C (32~140°F).
2. DO NOT use with hot water.
3. NOT dishwasher safe. Hand wash only.
4. When covered with the lid, a floating glass with very few liquid may tilt, and therefore, it is recommended to keep the glass at least 1/4 full when you use the lid.
5. If the lid is not used, the glass floats nicely regardless of how much liquid is in there!
6. Keep in mind our lids are specially designed to be light-weight so that the glass floats steadily, so dont use other lids from your cup-boards!