ASICS Women's GEL-Foundation 8 Running Shoe 100% Synthetic leather and synthetic fiber Rubber sole DuoMax Support System helps ensure that the shoe maintains proper support for the foot during the critical transition from heel strike to toe-off GEL Cushioning Systems attenuate shock during impact phase and toe-off phases SpEVA midsole provides durability and shock attenuation Designed on lasts that properly cradle the foot