adidas Running - a3 Axiom W (White/Lilac/Dark Indigo) - Women's: The a3 Axiom. Feel propelled through every footstrike in this well-cushioned training shoe. Structured a3 in the heel gives you a fast, responsive ride. Structured a3 gives you a propulsive yet stable ride. Breathable open mesh upper with synthetic trims for durability and reflective accents. Molded EVA insole for anatomical comfort. adiPRENE + insert in the forefoot maintains propulsion and efficiency. adiWEAR outsole offers the ultimate in high-wear durability.