Description Easier to use than traditional whistles, this brass whistle makes it easy to blow a loud, crisp sound every time, even if you're a little out of breath. Great for and referees alike, the demonstrative shrill cuts through crowd noise and player chatter with ease. It can also be used in outdoors activities as emergency whistles. Features - Color: Golden- Material: Brass- Size: 5.50X1.00X1.00cm/2.16X0.39X0.39in- For referee, teachers, training, self-defense, survival, emergency, herding, training bird or dog, etc.- Best gift for your teachers, referee, teachers or your friends who are a big fan of outdoors activities.- Made of premium and durable brass material, it is very safe, durable and permanent.- The safe and durable material can also avoid the damage to the mouth and teeth.- Designed with bamboo joint shape, decorative and exquisite, a good gift for your friends.Packing list: 2 x Whistles