ASICS Women's GEL-Dirt Diva 3 Track & Field Shoe 100% Synthetic Synthetic sole Women's specific fit has a last construction to meet the fit requirements of the woman athlete Lightweight mesh upper is breathable and excellent for water release, Integrated lacing system wraps upper snugly and comfortably around the foot Solyte midsole material is lighter than ASICS' standard EVA and SpEVA, combined with improved cushioning and durability Rearfoot GEL Cushioning System provides shock attenuation in the heel 6 Spike Configuration conforms to the perimeter of the outsole to provide traction regardless of terrain