●Advanced silicone material,comfortable fit and soft,good oil resistance,anti-aging,suitable for wearing long time;

●Ring head belt design,keep more durable of polyester spandex elastic belt;

●clasp model,can be connected with filter gas box and filter cotton socket, used to protective dust or protective poison gas mask;

●In line with GB 2890-2009 standard and GB 2626-2006 standard,have China LA and QS certification;

●Package:36pcs/ctn,1pcs/bag,6pcs/box.