Adjusting the Chin Strap

WARNING! 

If using hearing protection, ensure that the chinstrap does not interfere with the seal between the ear-muffs and head. Interference with the seal between the ear-muffs and head can reduce the noise attenuation of the ear-muffs.

Failure to follow this warning can result in serious personal injury or death.

See Figure 2 . Make sure that you adjust the chin strap for a tight fit. To apply equal pressure between all four Y straps, pull the webbing through the side adjusters until the lengths are correct.