The ASICS® GEL-Fortitude II running shoe is designed for runners seeking a supportive platform in a neutral shoe. Open mesh upper create a snug, comfortable upper fit. PHF® (personal heel fit): memory foam lined heel collar molds to athlete's heel creating personalized fit. Wide forefoot base creates a stable platform at propulsion. SpEVA® midsole adds durability and shock attenuation. Forefoot GEL® Cushioning System attenuates shock at propulsion phase. Trusstic® system reduces weight while maintaining structural integrity. Rearfoot GEL® Cushioning System attenuates shock at impact. Wt. 12.6 oz.