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

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

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

●Big window can reduce hot-air to collect,low resistance;

●Have unique positioning device for filter cotton, install filter cotton only by one time. KN95 filter cotton,high filtration efficiency.

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

●Package: 1set/bag,6set/box,36set/ctn.