Material:Nomex waterproof and air-permeable layer,thermal insulation layer and comfort layer. The Fire Resistant Garment has four layers: Outer layer: The material is made from NOMEX. It enjoys the ability of flame resistant, oil proof, electrical insulation. It also has good resistance to acids and alkalis. Moisture barrier: Apply the PTFE made in China or GORE-TEX, the material could stop water passing through to the firefighters personal clothing while allowing perspiration and heat to escape to the outside atmosphere. Thermal Barrier: It used the non-woven felt made of ARAMID. To thermal barrier, flame resistant, anti heat radiation. Comfortable layer: Flame resistant cotton Reflective Trim: Uses 3Mscotchlite reflective tapes