adizero Boston Boost 5 ShoesThese men's running shoes are designed for racing and fast training. With boostâ„¢ in the midsole for an energy-filled, yet stable ride from the first step through the last mile. The durable, lightweight mesh upper keeps your feet cool. A portion of each paWeight: 8.5 ounces (size 9)boost™'s energy-returning properties keep every step charged with an endless supply of light, fast energyCoolever mesh upper and lining for heat management and enhanced performance; Tirrenina synthetic suede overlays for added supportExtended TORSION® SYSTEM for energy return in the forefoot and natural integrity in the midfootMolded responsive EVA sockliner for anatomical fit and great step-in comfortContinental™ Rubber outsole for optimal grip in wet conditionsImported