Design: Recycled engineered mesh upper offers an easy step-in, the ideal fit, and total comfort Swiss engineered to fit like your favorite socks Lining, laces, quarter cage, and internal reinforcements in the forefoot ensures a secure fit In-Shoe Comfort: CloudTec® in Helion™ superfoam offers increased forefoot cushioning Enlarged Clouds to the rear dampen heel strikes Extreme rocker outsole and Speedboard™ optimizes the natural rolling motion for propulsive power Durability & Traction: Rubber grip pads offer better traction even on wet surfaces Additional Details: Best for: Urban running, short-medium runs Buying a half size up in this model is recommended Total recycled content: about 5% / Polyester: about 15% recycled Weight: 9.95 oz (282 g) Heel-toe drop: 6 mm