5pcs in 1 pack = $40 - v+ n% N; U/ E: u; r 5 U4 G& `; H# r4 |( Z4 \3 |Available 400pcs total. ' y8 ^3 i) `% M9 QNo negotiation at all 2 w a, _1 [* H _4 T ( N5 i7 f8 j+ G& [Leave you phone number with amount you want
5 M! V8 H8 p+ C9 ?$ r7 R: _KF means Korea Filter and 80/94 means 80%/90% of filter efficiency. Hence, it means a mask that has 80%/94% of filter efficiency. KF 80 means the mask is certified to filter out at least 80% of the pollutants. KF 94 means certified to filter out 94% of pollutants.