The most energetic spike on the track. When it comes to cushioning, we prescribe to a very strict, “more is more" policy. The new Cielo FLYX breaks the mold with 25mm of bouncy, high resiliency PEBA foam. We've employed a composite plate that doubles as both a midsole propulsion plate and outsole spike plate, along with an ultra-breathable, engineered mesh upper, to deliver an elite race spike that will tackle anything from 1500 meters to 10K and every distance in between. This shoe is designed for competitive runners seeking maximum energy return and cushioning for track and road races.