Which of the following is a feature of the head harness in the SCBA?

The head harness in the SCBA is equipped with a 5 point tightening system, which is designed to ensure a secure and customizable fit for various users. This feature allows firefighters to adjust the harness for better comfort and stability, preventing any movement or slippage during use. A snug fit is essential to maintain an effective seal around the facepiece, which is critical protection against hazardous environments. The ability to adjust the harness in multiple points also accommodates different head shapes and sizes, enhancing overall effectiveness and safety while operating in potentially dangerous situations.

While the head harness might be made of durable materials like nylon, undergo high heat testing, or be subject to drop testing, the specific emphasis on the 5 point tightening system highlights its primary role in the SCBA's functionality, making it a critical feature worth noting.