Obviously, aerodynamics and body weight are only A part of the equation—the P-collection comes along with a 500mL aero bottle, 400mL of top tube storage, and an built-in rear hydration mount. Customize the cockpit and the storage to your requirements and your race. Which prospects me to the Aspero five. https://titushjido.tinyblogging.com/helping-the-others-realize-the-advantages-of-bicycle-chain-70449542