Weighing In At Just Under Five Ounces, The Sortiemagic Rp 6 Model Comes Complete With A Flytefoam Propel Midsole And Propulsion Trusstic Technology To Help Generate A More Efficient Stride. Designed To Race At Faster Speeds, This Shoe Also Implements A Lightweight Mesh Upper That'S Complemented With Melded Overlays To Help Increase Support Throughout The Forefoot.