The Giant Propel Advanced SL is the choice of top pros for sprints, attacks & breakaways & exhilarating speed. Your ultimate aero advantage. Its the frame of choice for Team Giant-Alpecin sprinters & breakaway artists. They know it gives them an edge because its been proven through third party aerodynamic testing. Engineered & developed with Aero System shaping technology, which means every tube shape & angle is optimised for minimal drag, the Advanced SL-grade composite frame is stiff & efficient yet still superlight. Best of all, it saves you 12-36 seconds over a distance of 40km at a speed of 40kph compared to key competitors. With proven technologies including the Speed Control SL brake system, an integrated vector seatpost & internal cable routing, its the bike you choose when every second counts.