PBI Matrix enhances the original high performing heat and flame protection from PBI Gold to create added durability and abrasion resistance. 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.