Honeywell Howard Leight Viking V1 Earmuff's with Bilsom's patented Air Flow Control™ technology. Honeywell have developed these earmuff's for use in various noise applications; they have an SNR rating of 30dB. The headband have various adjustment positions (over the head, behind the head, under the chin) which ensures the wearer can remain comfortable and safe during use, however they may be positioned for the task. Bilsom's technology controls the air flow that is allowed into the muffs. Sound travels through the air; controlling the amount of air capable of entering the earmuffs means Honeywell and Bilsom can create a much safer product that consistently delivers the optimal attenuation across all frequencies. The ear cushions simply snap into place meaning they can be removed and replaced easily.