I keep this little baby on my keychain wherever I go. It's a survival tool that packs a punch. It's waterproof, can be heard from like a mile away, and requires very little breath behind it. I first used one when I found one in my mother's glove compartment, next to things she was taking with to work. My mother is a high-ranking law enforcement officer who works within the California State correctional system. This is what they use against the inmates and this is also what helps save their lives when they are in distress situations. I read somewhere that wilderness survival expert Doug Ritter always carries one of these with him wherever he goes. For the price and compact size of this little baby, you'll definitely get more than what you pay for. I wish I had this back when I was in Boy Scouts. 5 stars

How many times have you crunched thru your whistle and played the game wondering if you swallowed the little pieces that broke off, let alone if you are going to chip a tooth... This is the most comfortable whistle going. 5 stars

As a football referee, I needed a whistle that will cut through the loudest crowd noise. No other whistle does it quite like the Fox 40. It has a shrill, piercing sound at 115 decibels. The problem came with me chewing through my whistles. When Fox 40 came out with their CMG whistle this problem was corrected. This is the most comfortable whistle I've used. I wouldn't use anything else. 5 stars

The product is great as well as the service. My shipment came very quickly and I was tremendously pleased all the way around 5 stars

Very comfortable and responsive whistle.

Would be cool from FOX40 to have more designs. 5 stars