adidas Running - a3 Transfer W (White/Shock Red/Metallic Silver/Skyline) - Women's: Everyday training shoe for runner looking for a fast ride. It features a light, supportive upper with 360 degree reflectivity and a3 in the heel to cushion, guide and drive your foot. Upper includes reflective materials for safety in low light conditions. Textile lining. Molded EVA insole for anatomical comfort. adiPRENE(R) midsole maintains forefoot propulsion and efficiency. Structured a3 elements for weight reduction and durability.