Quality material：The whistle is made of durable Ti-6Al-4V titanium alloy. Lightweight and sturdy. It is processed by CNC finishing and sandblasted stonewashed surface treatment technology, no sharp edges.
Simplified structure：Cylindrical and single tube design, we use titanium core instead of rolling ball, make it more easy to blow.
Easy to carry：Attach key ring or strap to the hole on the whistle, small and compact to carry.
