adidas Running - Response 99 W (Deep Sea/White/Lime Green) - 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. adiPRENE(R) - maximizes heel protection and stability. Shock absorbing material located under the heel, provides extra protection from harmful impact forces. TorSion(R) System creates stability and control. Allows natural rotation between the rear foot and the forefoot, provides midfoot support and improves surface adaptability. Compression-molded EVA and carbon rubber outsole.