Overtone flute in G outlets 43cm larch wood with a flute bag

The overtone flute is the simplest flute.
It has no holes, you change the pitch by overblowing, i.e. by blowing harder or less hard. You can hold the end of the flute to create more notes.
These flutes are made of larch wood ~ 43cm long and are in G.
It outlets is treated with walnut oil.
It comes with a bag made of organic cotton.