The Difference Mirafi ® RSi-Series Woven Integrated* Geosynthetics Make: Modulus. Separation. Confinement. Water flow. Orange product identification. Superior integration*.  Reinforcement Strength. Higher tensile modulus properties than the leading stabilization products. Separation and Filtration. Unique double layer construction provides a wide range of pore sizes for an excellent separation factor, superior filtration and flow characteristics of a fine to coarse sand layer