Brooks Women's Trance 10 Running Shoe Mesh Rubber sole E-Fusion - This new compound outperforms traditional rubber outsoles in wet and dry skid r Pod Tech - A system of 'pods' in the midsole and outsole enabling the shoe to bend and fle Hydroflow - fluid-filled centre chamber reduces the shock at impact and take off and dynam DRB ACCEL - promotes natural movement between the heel and forefoot, This component utilis P-DRB ( progressive diagonal rollbar) - dual density post is biomechanically engineered to