NIKE Lunar Racer+ Racing Shoes FLYWIRE - Provides targeted support, helping keep the foot more secure, reducing the chances of slippage during activity as well as being extremely lightweight. Low Profile Midsole - For a ground-hugging, fast response feel. Nike + enabled - This shoe accepts the revolutionary new Nike+ sensor. As seen on TV - this shoe is Nike + enabled. LunarLite Foam - 30 percent Lighter than standard Phylon and springier, giving your shoe greater comfort and better performance.