When it comes to race wheels there is no other company that has continued to push the envelope in terms of construction and aerodynamics. Zipp continues to take the lead with its truly innovative design and fantastic research and development. A true weapon of choice of many top athletes and age-groupers alike, and there's a reason why! Zipp wheels were built to go fast and their rim shape has been optimized by computational fluid dynamic algorithms and fine tuned in the wind tunnel. Now you can feel the difference with TriSports.com's Tri Before You Buy Wheel Demo Program!