True or False: Polyester fibers are hollow, don't absorb moisture, and are poor at wicking moisture.

The statement is true because polyester fibers are indeed hollow, which contributes to their lightweight properties and ability to provide insulation without being overly heavy. Additionally, polyester is hydrophobic, meaning it does not absorb moisture effectively like natural fibers do. This property makes polyester less effective at wicking moisture from the skin to the outer surface of the fabric compared to materials such as cotton or wool.

In search and rescue operations, the choice of clothing and materials can significantly impact a responder's comfort and effectiveness. While polyester does provide some benefits, such as quick drying and durability, its limitations in moisture management mean that it may not be the best choice in situations where wicking moisture away from the body is critical. The correct understanding of these characteristics is vital for making informed decisions about gear and equipment in SAR scenarios.