Giant Compact Frame Sizing
We're not talking one of the countless marketing-driven "revolutions" you hear about these days, we're talking a real revolution--one that changed the face of high-performance bicycles forever. It's known as Compact Road Design, and it's the backbone on every Giant road bicycle. In fact, Giant's Compact Road Design made such a big impact on the way bicycles are make, it's hard to find a high-performance bicycle that doesn't copy Giant's original sloping toptube design.
By effectively sloping the toptube downward toward the seatstays, Giant was able to reduce the overall size of the front and rear frame triangles, resulting in the now-distinctive compact layout. Functionally, the compact configuration reduces weight and increases lateral rigidity. As a result, the frame accelerates faster thanks to less energy loss through unwanted flex. Stiffer is more efficient, but it doesn't always offer the most comfortable ride. To address this, Giant engineers are careful to include just the right amount of vertical compliance (a good thing) into each Compact Road Design for increased forgiveness and control. A full range of sizes (up to seven in some series) assures that riders of every size can find their ideal fit.
Giant's sizing chart can help you determine what size frame you would ride:
Looking for more information? Check out this article:
Frame Size Tests