Brooks PureConnect 4 - Men's Connect with your body's natural running motions in this lightweight running shoe. Highly breathable mesh upper with lightweight synthetic overlays. Full-length BioMoGo DNA midsole is a blend of earth-friendly BioMoGo and responsive Brooks DNA, with a gender-friendly cushioning design, making for a dynamic ride. Rounded heel encourages contact points to shift forward, aligning the joints and creating energy return. Omega Flex Grooves for midsole flexibility without compromising cushioning. Toe Flex features a split-toe design for forefoot flexibility that promotes the big toe to engage the runner's natural stability and power during push-off. Blown rubber outsole for durability, responsiveness, and flexibility. Wt. 8.0 oz.