1. Take out all parts of the suction cup, remove the sealed plastic film on the surface and clean all parts, or rinse with boiling water.

2. Unscrew the cup cover, insert the thinner end of the straw into the straw plug of the cup cover, and observe whether the straw is completely inserted. If it is not completely inserted, you can insert it to the bottom with a little force.

3. Put the rubber pad under the cup cover, and then twist the cup cover to start using.

4. Note: Clean the straw regularly with a straw brush to prevent the growth of bacteria.