PBI Matrix® combines the high-performing heat and flame protection of PBI Gold™ with a durable matrix of high-strength 600-denier filaments to reduce wear and tear. Brochure Where To Buy Why Choose PBI MATRIX? PBI Matrix is reinforced with 600-denier cables of DuPont™ Kevlar®, which provide the ultimate ripstop power. Best thermal stability available offers firefighter insurance for worst-case scenario. Superior trap tears for better durability. Superior TPP and flame protection.