VALUE PACK Each package contains 4 Emergency Safety Whistle with Lanyard, each whistle is 72mm x 18mm with a 240mm lanyard attached. MULTI-USE Safety whistle is not only for emergency use, it can also be used for drawing others attention in any environments, such as hiking, camping, fishing, gym coach, schools, sports training, events, water activities, dogs training, or even cops, any of those need to warn threats or seek help or attention for safety. IT FLOAT! A5 Special designed safety whistle works well in any conditions, even it can float on water, making them a extremely good emergency safety must have gadgets for swimming and any water activities. Our safety whistle is shatterproof, bright colours, and highly visible, making it easily in sight, a great safety tool. SUPER LOUD, 120db Our Safety Whistle is constructed with dual chambers, making it a high-pitched whistle. This super loud safety whistle can give out up to 120db noise level with a full stroke by a healthy person. This kind of noise can be heard over 1 mile away. Of course you may have to blow a little bit to give out that kind of loud signal. ONE PIECE DESIGN Benefiting form its one-piece design, our safety whistle does not consist of any moving parts, with no sound obstructing, no jamming, or freezing while traditional whistles do. Our safety whistles are make of ABS plastic, making it waterproof, moisture, and shock resistant, and most importantly it will NOT STICK TO LIPS like traditional metal whistles in cold weather.