To choose the right fixie bike for yourself, look for the following aspects: Frame Size & Shape: It is important to choose the right frame size according to your height and inner seam to pedal comfortably during the ride. Talking about the frame shape, a compact frame is easier to handle the bike with a shorter wheelbase. Also there should be less gap between saddle and the steering tubes for the comfortable ride. For easy and comfortable pedaling, choose the higher pedal case. Frame Material: Always go for the material which is solid yet affordable & lightweight. Although steel frame is solid but not good in humid conditions and can be rusty quickly. Aluminum is more lighter and reactive than steel in humid conditions but is slightly expensive, so is the carbon fiber. So choose accordingly. Wheel Type: You can either go for conventional spokes or choose the one with less spokes to lighten the weight according to your body size and preference.