The ASICS® GEL-Speedstar™ II is a lightweight performance running shoe designed to meet the needs of the biomechanically efficient runner who wants a fast, flexible shoe with a comfortable breathable upper. DuoSole® outsole offers enhanced flexibility and durability. GEL® Cushioning System attenuates shock during impact phase and toe-off phases. Trusstic System® links the rearfoot and forefoot and shores the midfoot. SpEVA® midsole provides durability and shock attenuation. Wt. 7.3 oz.