What should I do if I am between two sizes?
First, verify that both frame size can achieve your required seat height. If so, then you can pick between the sizes according to your riding style and personal preference: The bike with the smaller frame will be lower and shorter, giving you a more compact position on the bike. The bike will be nimble, agile, and more lively underneath you. If you choose the larger frame, you will be more stretched over the bike because it will be longer and higher. This results in a more stable ride and more speed when riding in a straight line.