Chase your next PR in these adidas Adizero running shoes The breathable mesh upper rides on a mix of superlight Lightstrike cushioning and resilient Lightstrike Pro The combination makes these shoes fast enough for race day while being able to stand up to everyday training TORSIONRODS add a soft stiffness that increases force transfer in each stride The result A pair of running shoes that help you run faster and longer than ever before all while feeling fresh on your feetRegular fitLace closureLightweight mesh upperFlexible feel with support in key areasTORSIONRODS increase force transferLightstrike cushioningWeight 77 ounces size 9Midsole drop 8 mm heel 27 mm forefoot 19 mmContinental Rubber outsoleUpper contains a minimum of 50 recycled content