PP 18+18+18 GSM 175CM x 100Cm Interlocking Elastic, 3-layer Medical Mask with Nose Piece, Outer Layer PP Spun-bond is 21.6 GSM, Filter Layer Melt-blown is 21.6 GSM & Inner layer Spun-bond is 20.9 GSM.

3 or 4 ply Mask without Melt-blown filter

3 or 4 ply Mask with Melt-blown filter