Designed for distance runs. Lightweight, breathable, flexible... and crazy-fast.Details:Engineered mesh upper is lightweight & breathable with stretch & structure where you need it Internal midfoot tongue wings for added support & stability EVA sockliner provides extra cushioning & rebound One-piece Micro G® foam midsole turns cushioned landings into explosive takeoffs Forefoot Pebax® plate provides a push of power to help maintain speed 4-pin track spike outsole delivers enhanced grip & traction Regular ¼" pyramid spikes Weight: 6.1 oz.