The transparent flute blowing aid helper is durable and light-weight, suitable for flutes in g tune. Suitable for concerts, birthday parties, outdoor dinners, family gatherings and other . This flute blower mouthpiece whistle is great for beginner novice flute practice. This practical flute aid mouthpiece is made of good materials, durable, and you can use it with confidence. The design will give you a wonderful experience and bring you a good mood.