adidas Running - Response Trail 9 W (Med Uniform/Lt Uniform) - Women's: A well-cushioned running shoe designed for under-pronators to neutral runners. A great trail shoe thats designed for primary off-road use but can be used for road running. Synthetic leather and mesh upper for long wear, and durability. adiPRENE(R) - maximizes heel protection and stability, also maintains forefoot propulsion and efficiency. Shock absorbing material located under the heel provides extra protection from harmful impact forces. Elastic material located under the forefoot, retains natural propulsive forces for greater forefoot efficiency. TorSion(R) System creates stability and control. Allows natural rotation between the rear foot and the forefoot, provides midfoot support and improves surface adaptability. TraXion(tm) - maximum grip in all directions. The outsole has optimal ground penetration for maximum grip, larger surface area for greater acceleration, and better pressure distribution for increased comfort.