●Ring head design, more suitable for wearing safety helmet on operating environment,more durable of polyester spandex elastic band;

●Enter air from three faces:reduce hot-air to collect,low resistance.The filter cotton can effectively filter a area of 120 square centimeters;

●Advanced silicone material: comfortable,fit,soft,good oil resistance,anti-aging, wear for long time;

●Special positioning device for KN95 filter cotton,once installed in place,high filtration efficiency;

●Rotatable clasp design:repeat installation and disassemble are not broken,especially suitable for winter,easy to install;

●In line with GB2626-2006 standard,have China LA and QS certifications;

●Package:1set/bag, 6set/box,36set/carton