Fox 40 "s newest whistle arrived!!!! innovations for both team sports and safety use: the SONIK BLAST and SONIK BLAST CMG (Cushioned Mouth Grip) pealess whistles. To date, the Sonik Blast CMG is the most efficient, loudest whistles ever produced by Fox 40 - innovators of the pealess whistle technology. This model is extremely easy to blow, cannot be overblown and emits a sound power of +120dB. This clear loud blast carries over extreme long distances and noise. The 4 sound-producing resonators built into the 2-chamber design achieve the efficiency and decibel level. The Sonik Blast CMG provides additional comfort for holding the whistle in the mouth.