Features: Great holding power. Very comfortable and lightweight. Facial body washable. Great comfort breathing. CERTIFIED ACCORDING TO EN 140-141. Thermoplastic rubber body facial anti-allergic, chemical filters equipped with two lateral and central exhalation valve. Suitable for use in atmospheres containing toxic gases and fumes. Filters coupled by threaded end cap fitted with pressure. * Filter element provided with first quality material. Weight 350 g. Great holding power .* Very comfortable and lightweight. Body facial respiratory washable comfort .* Great. Filter coupled with tight end cap screw with pressure. Filter element provided with first quality material. In 148 thread standard that allows any type of filter that meets the standards EN 141 and EN 143.