ASICS Men's GEL-105 Running Shoe 100% Synthetic leather and synthetic fiber Rubber sole Compression molded EVA midsole attenuates shock throughout the gait cycle 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 System attenuates shock during impact phase Trusstic System links the rearfoot and forefoot and shores the midfoot Designed on lasts that properly cradle the foot