Combination uppper with partial bootie style constructionSecure lace-up closureFabric wrapped insoleTwo Zoom Air units under the forefoot compress under your weight and spring back for energy returnRubber outsole is designed for flexibility and shock-wave inspired tread pattern for tractionBreathable shoe liningPadded collar helps contain your ankle, while the ridged external heel counter helps keep you stablePull loop at tongue for easier on and offNike branding details