PERFORMAX™ Synthetic Macro Fibers are manufactured from a blend of 100% virgin polyolefin resins. PERFORMAX™ Synthetic Macro Fibers meet the requirements of ASTM C1116/C1116M “Standard Specification for Fiber Reinforced Concrete” and the requirements of ICC ES AC32 Section 3.1.1 for plastic shrinkage reinforcement and 3.1.2 for shrinkage and temperature reinforcement.