More hygienic than traditional whistles
Just squeeze...provides a loud, clear sound
It can Save your lungs
Excellent for use in physical education or coaching volleyball
it's great for teachers, it can use in large classroom when students are getting a little too rowdy .
If you use a whistle regularly, this is a great option (teacher, coach, ref). Attaches to keys or lanyard, high quality whistle and sound. Durable. Shareable.
Perfect for when you’re teaching gym. A great alternative to the usual whistle. Super easy to use and less chance of passing germs if someone borrows it，Will not spread disease！
No more germ spreading sharing a dirty whistle with teammates for our volleyball league.
