Asics - Gel-Speedstar (Glacier/Liquid Silver/Black) - Women's: The GEL-Speedstar(tm) is a lightweight training shoe for the biomechanically efficient runner who seeks a flexible, well cushioned ride and superior breathability. PU Forefoot DuoSole(R) Blends flexibility, traction and cushioning during propulsion. Trussic System(R) links the rearfoot and forefoot and shores the midfoot. GEL(R) cushioning system(R) Provides maximum rearfoot and forefoot shock attenuation. Full length SpEVA(R) midsole for increased shock attenuation and midsole durability.