Elevate your stride. Every run gets better in the Endorphin Shift 3. Stacked with PWRRUN cushioning for comfort, it uses enough foam to help you transition effortlessly from week to weekend. This is a shoe that can keep up no matter the workout. FEATURES Lighter, softer, speedier. - Get to know the softer side of SPEEDROLL Technology with an extra 2mm of PWRRUN foam cushioning and a focus on comfort. Light on your feet. - Durable and lightweight mesh pairs with a streamlined heel clip for support that doesn t weigh you down. Better transitions. - With a new groove in the heel, you can touch down and roll forward more easily than before. Deeper FORMFIT - Hugs every part of your foot for a personalized fit and feel. New torsional heel groove - provides a smoother transition from heel to forefoot. XT-900 - Durable rubber outsole PWRRUN+ - Premium sockliner for additional cushioning and comfort. SUPPORT LEVEL - Structured Cushioning OFFSET - 4mm (39/35mm) SOCKLINER - PWRRUN+ WEIGHT - 229G