Mask for preventing permeation of foreign material

A mask for preventing passage of a liquid foreign material for a wearer, comprising:

• a liquid absorbing layer for absorbing a liquid foreign material applied thereto, said liquid absorbing layer being formed of fibers having an average diameter from 1.0 .mu.m to 2.0 .mu.m, a weight per area from 15 g/m.sup.2 to 25 g/m.sup.2, and a space in a cubic unit of 90% or more, and
• a liquid transmission prevention layer disposed on the liquid absorbing layer at a downstream side of air flowing through the mask and formed of a gigged non-woven fabric having a base layer and a number of gigged hairs formed at one side of the base layer, said liquid transmission prevention laver being disposed to allow the gigged hairs to contact the liquid absorbing layer for reducing an area of contact of the liquid transmission prevention layer with the liquid absorbing layer so as to prevent the liquid foreign material absorbed in the liquid absorbing layer from permeating into the liquid transmission prevention layer so that said liquid transmission prevention layer prevents the liquid foreign material absorbed by the absorbing layer from contacting the wearer and allows air to pass smoothly.