Style: S20813-33 Color: Infrared Product Details: All new from top to bottom, the Saucony Endorphin Shift 3 continues to offer max cushioning while also delivering the efficiency benefits the Endorphin series is known for. A highly stacked PWRRUN foam midsole has a new compound that is lighter with the same great vibration dampening qualities. The Endorphin Shift’s ride benefits from SpeedRoll, an aggressive geometry that emphasizes forward roll with increased toe spring for excellent energy conservation and propulsion. To aid in the smooth ride, a large flex groove, beveled heel, and durable rubber outsole smooth out impacts and allow the shoe to move freely encouraging natural movement. A durable and lightweight mesh surrounds the foot with a reinforced TPU heel cup to provide support and comfort. The Saucony Endorphin Shift 3 is an excellent daily trainer with the technology and ride to meet all your daily training needs. What You’ll Love Higher forefoot stack provides ample protection New upper is lightweight and supportive Rockered geometry encourages forward movement Technologies MIDSOLE PWRRUN cushioning underfoot provides a just-right softness that feels forgiving without being squishy. SPEEDROLL is an always forward geometry that creates a lively rolling feel underfoot. OUTSOLE XT-900 rubber outsole is placed strategically to increase traction and durability.