Which is the innermost layer of bunker gear?

• A. Thermal Layer
• B. Outer shell
• C. Moisture Barrier
• D. Insulation Blanket

Answer: (A)

The main idea is that bunker gear protects you with layered insulation to cut down heat transfer. The innermost protective layer is the thermal layer, the insulating material that sits closest to the body after the moisture barrier. Its job is to trap air and slow heat conduction and radiant heat from reaching your skin. The outer shell provides flame and abrasion resistance, while the moisture barrier blocks water and steam but stays breathable. The combination keeps you safer, and the thermal layer is the key part for reducing heat transfer to you.