2) Drain it out. Let the water drain from the inside by shaking the toy over a draining board or sink. Let the sleeve dry out completely. This can take some time. You can help the drying process along by getting yourself a flute care kit!
Simply, hook a dry cloth to the pole and give the inside of the toy a good drying. Be careful not to rip in the sides. Otherwise, you can leave it to drip dry on a towel on a draining board or in your sink. Don’t put the skin back into the hard case whilst it’s still wet.