Thread this cloth through the needle-like slot in the end of the cleaning rod. Uncouple the flute at the joints so that the mouthpiece pipe, main body and foot joints are separated. Draw the cloth on the cleaning rod through each of the sections so that all the moisture is removed. If you play the instrument a lot, it's wise to have two or three cleaning cloths. Launder and dry them, or replace them.
Freshness is important.
It's made of aluminum and has a thumb loop at one end. Take care when removing the foot joint. It has a very small and delicate key connection that can very easily be bent. This affects the closure of a keypad producing a low register note. Mold buildup occurs if moisture and dampness are not removed regularly.