éBuilt with the flat footed runner in mind, the Brooks Dyad 9 is a cushioned daily trainer that offers ample room to accommodate orthotic use. The use of BioMoGo DNA cushioning offers adaptive cushioning and dual stability arch pods help create additional bilateral support. Along with a roomy air mesh upper , the Dyad 9 has all the tools to hit the roads running. All Clearance and Special Priced items are final sale for online orders. We will exchange for your correct size pending inventory availability at a convenient location within 30 days, please contact Customer Service to arrange the exchange or store credit.é