FeaturesBenefitsnbspIn order to trust your run you need to trust your shoes Now you can trust in the power of running with SolarBoost 3 Our LEP system allows you to get optimal energy return while our specially developed Control Rail offers complete control and stability every time you lace up The Boost midsole is the most responsive adidas cushioning to date and is engineered to provide energy return for a responsive and stable run Go further and faster with less energyRegular fitLace closureEngineered mesh upperStable feelHeel counterBoost midsoleWeight 11 ounces size 9Midsole drop 10 mm heel 32 mm forefoot 22 mm