ASICS Men's GEL-Kahana 3 Running Shoe 100% Synthetic and mesh Rubber sole AHAR heel plug enhances durability at initial impact, GEL Cushioning System attenuates shock during impact phase Compression molded EVA midsole provides shock attenuation throughout the gait cycle Trusstic System links the rearfoot and forefoot and shores the midfoot DuoMax Support System ensures that the shoe maintains proper support for the foot during the critical transition from heel strike to toe-off Width specific footwear designed on lasts that properly cradle the foot