First Layer:
A Blue Non-woven Fabric which is PP material cut into 170 to 175 MM for adults. It has a density of 18 to 25 GSM. Usually the color is blue.
Second Layer:
The second layer uses a filtering material made of SSMMS fabric. It is 25 GSM thickness material normally with single / double layering of 170 to 175 MM for adults.
Third Layer:
The third layer is a white non-woven fabric material with 190 to 195 MM for adults with a density of 18 to 25 GSM.
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