The Grid C2 Flash from Saucony features Air Mesh Upper - Provides lightweight breathability. Overlasted Forefoot - Offers low to ground look and feel. HRC Strobel Board - Increases cushioning and step-in comfort. Reflectivity - Provides enhanced visibility on your night time runs. Compression Cradle C2 Technology - Engineered to cradle your foot attenuate shock and provide a smooth cushioned ride. Ionic Grid System - Molded pillars provide heel cushioning. Triangular Lug Design - Maintains traction and cushioning on all terrain. XT-600 - A carbon rubber outsole material that has outstanding abrasion and traction properties.