The Formula 23 is a versatile looker. Engineered mesh blankets the upper, letting his hardworking feet breathe easy, while the synthetic mudguard wraps the sneaker and meets up with the laces for a locked down and supportive fit. A synthetic gored lacing system has plenty of stretch for a just right feel, UPPER: Engineered mesh, stretching gore lacing system MIDSOLE: Injected Phylon foam OUTSOLE: Rubber with traction pattern