Oakley has released its long awaited CarbonX® Complete Line of base layers! These open eyed balaclavas are incredibly soft and lightweight while providing the new standard in fire safety gear. CarbonX® yarns and fabrics will not burn when exposed to intense heat or flame, because the actual fibers will carbonize and then expand, eliminating any oxygen content within the fabric! Why CarbonX® ? "Flame resistance is commonly measured by the highest Limiting Oxygen Index (LOI), the amount of oxygen needed to support combustion. The higher the LOI value, the more flame-resistant the material. CarbonShield (made with CarbonX® fabric) has an LOI over 50% higher than Nomex® and 33% higher than PBI/FR/Rayon blends" (PGI Inc. marketing literature)Pit Stop USA offers Oakley CarbonX® Base Layer Long Sleeve Top 43524 at low everyday prices. Be sure to check out all of our products from Oakley including Oakley CarbonX Underwear and Oakley CarbonX Underwear.