Reebok - Premier Trinity KFS (White/Airstrip/Black/Reebok Gold) - Men's: Running shoe built for the excessive over-pronator who requires a combination of cushioning and reinforced stability. The Premier Trinity KFS has DMX Shear in the heel to absorb the stress at heel impact. While providing vertical and horizontal cushioning. Compression-Molded EVA midsole reduces the density, making it lighter. Dual-Density Medial Post offers pronation control. Transition bridge for heel-to-toe transition. DMPRTEK outsole delivers cushioning, traction and durability.