This is a portable vacuum-insulated flask manufactured by Thermos that allows you to enjoy your drink at the desired temperature no matter where you go. This model has a lovely picture of ume (Japanese plum) on its surface.
Open to remove the cap, and press the buttons attached on both edges of the mouth. Then remove the mouth.
Remove the rubbers attached to the upper cap and the mouth.
When reattaching these parts, make sure to place rubbers in their original area first. Push the cap strongly into the mouth until you hear a clicking sound.
Do not place this bottle in the microwave.
This product is not dishwasher-safe (except for the rubber rings).