(4255 by 3M) with 2 wide-area activated-coal inhalation and exhalation valves,size adjustable 4 point straps,reusable, maintenance-free,up to 30 times the TLV (threshold limit value) for particles,organic gases, fumes and dustprotection against unpleasant, organic smellsCE, EN 405:2001+ A1:2009
