What is the composition of the earlap on the structure helmet?

• A. Flame resistant black flannel outer, nomex inner
• B. Nomex outer with flame resistant inner fabric
• C. Black outer with flame resistant inner lining
• D. Black colored nomex outer, flame resistant black flannel inner

Answer: (D)

Earlap construction aims to balance heat protection, durability, and comfort. The outer layer should be flame resistant and robust, typically NOMEX, while the inner lining provides an extra layer of protection and comfort against the skin, usually also flame resistant and soft like a flame-resistant flannel.

The best match specifies a black colored NOMEX outer and a flame-resistant black flannel inner. This aligns with the standard setup: NOMEX outer shell for structural protection, plus a comfortable inner lining that adds another layer of flame resistance. The other descriptions either put flame-resistant material on the outside, omit the specific outer material, or don’t name the inner fabric clearly, which doesn’t reflect the common helmet earlap construction.