Final answer:
Firefighter turnout gear is the special protective clothing with an aluminized outer shell, designed to reflect radiant heat and protect from high temperatures during firefighting operations.
Step-by-step explanation:
The type of special protective clothing that is designed similarly to structural personal protective equipment (PPE) but features an aluminized outer shell is Firefighter turnout gear. This gear is specifically engineered to protect firefighters from high temperatures and is often used in proximity to fire. The aluminized outer shell reflects radiant heat, protecting the wearer from the intense heat produced by fires. Nomex and Kevlar are materials commonly associated with this type of protective clothing. Nomex is a fireproof material used in various applications, including wildland firefighter shirts and trousers, racing car driver suits, and military pilot flight suits. Kevlar is known for its use in body armor and combat helmets but is also used in firefighter gear because of its lightness and durability.