APL AeroLux upper with rubber sole.Lace-up front.APL logo on TechLoom tongue.Maximum cushioning APL FutureFoam midsole provides a lightweight and responsive ride with every step.Lightweight, solid rubber outsole designed for road and gym use.APL Souffle sockliner for unmatched instant step-in comfort.The 8mm drop from the heel to the forefoot places your foot in a natural position for efficient running and training