KF99 FFP3 4 LAYERS STRUCTURE PROTECTIVE RESPIRATOR FFP3 5 LAYERS STRUCTURE PROTECTIVE RESPIRATOR Outer Layer Second Layer Third Layer Fourth Layer Inner Layer ICONIC KF99 0 KN99 ARE THE HIGHEST STANDARD FOR PROTECTIVE RESPIRATOR • The main difference between ICONIC KF99 & KN99 is the structure of the design. • Filtration Efficiency between ICONIC KF99 & KN99 are similiar. • The additional layer of ES Hot Air Filter Cotton for KN99 also known as air vent cotton, is a type of insulation material. Feature: Soft Touch • Moisture-absorbent • Heat Insulation • Good Breathability • Enhance Comfortability