Available in mock turtleneck style shirts and long underwear, Black Ice FR™ and Silver Lining FR™ provide both flame resistance and breathability. Made from just 6 oz of FR blended fabric, Silver Lining FR™ provides arc rating of 12 cal/cm² and offers thermal protection when worn under aluminized PPE. Black Ice FR™ is constructed from 7.7 oz fabric and delivers arc rating of 15 cal/cm², HRC 2 protection, and optimized thermal protection when worn under aluminized clothing.