Futura Competition Shirt. Tredstep Symphony Futura Competition Shirt Long Sleeve is made using the exclusive Airsilk 4 way stretch fabric which converts perspiration to cooling energy, working to keep you free to ride with confidence. This shirt is exquisitely detailed with a crisp woven collar and hidden snap closures, flattering seams and ribbed side panels. A soft silk feel against your skin for perfect performance and style in or out of the ring. Airsilk is a silk like fabric construction that controls moisture and sweat. The beauty of this technology is that it works better in hot humid conditions.