Asics - Gel-Flash DS (Neon Yellow/New Navy/Lightning) - Men's: The Gel-Flash(tm) DS is a lightweight training and racing shoe for the biomechanically efficient runner who seeks a flexible, well cushioned shoe. Forefoot DuoSole(R)/DuraSponge(R) blends flexibility, traction and cushioning during propulsion. Trusstic System(R) links the rearfoot and shores the midfoot. GEL(R) Cushioning Systems provides maximum rearfoot and forefoot shock attenuation. Shoe weighs 10.0 oz.