Fox 40 Sonik Blast

I am a lifeguard and this whistle is perfect as it is by far the loudest one in a very busy pool, all other lifeguards asking which one it is because it's so good. Had this for 3 months of high intensity use and showing no signs of wear or performance drop

Great item. Staff in a school setting. The kids hate it, but it focuses their attention.

As a new PE teacher my daughter needed a whistle, she wanted a red one. Read lots of reviews both on Amazon & elsewhere 'Fox 40 Sonic Blast' always came at the top, found it in red on Amazon so brought it as a gift. She absolutely loves it, so loud that all the kids stop even at a busy lunch time in the playground. It's so good the other long standing PE teachers have dumped off their cheap whistles & brought one.

Brilliant - Loud - Dependable for all my Mountain Trekking

Haven’t had the opportunity to use it yet but it’s loud

This is a bright colour and gives me the chance to stand out on the field! The protective mouthpiece feels comfortable in the mouth and the pitch of the whistle is ideal for louder events (I referee in football stadiums). I find this slightly easier to blow than other comparable whistles (Fox 40 classic I cannot get on with for example). I find this whistle allows a variation of tone, but doesn't 'die' out mind blow.

This is a great whistle, and am glad I purchased it. Only minor issue was that the Breakaway Lanyard was not included in the package, but I have been in contact with the seller and they will send one out.

I came across these at a Hockey tournament when it was very windy & the only whistle you could hear was this one. It also has the soft mouth grip which is kinder to use. if you go out on the fells & need to be heard this is the whistle for you.