PVC; Practical small whistle-- the hand squeeze whistle is really deafening loud and can still be heard from a distance, teacher whistle.
Death whistle-- for referee, teachers, training, survival, emergency, training bird or dog, etc, portable survival whistle.
whistle-- in addition, it can make a loud, crisp sound by hand squeeze, you can use it easily and in any situation, multi-function whistle.
Survival squeeze whistle-- multi-use in sports occasions or outdoors activities, great your teachers or families, wistle.
Hand whistle for coaches-- designed with a hole, it is easy to carry, or only wear it around your neck with a lanyard, whistle for outdoor.

What's in the box
2 x Hand Squeeze Whistles