A Gazelle bicycle is designed for maximum comfort, performance and style. You sit higher on a Gazelle than you may be used too, giving you superior vision and maximum efficiency. For full enjoyment, it is important to match the rider to the right size bike. Therefore Gazelle offers a number of frame sizes to choose from. There is some overlap with frame sizes because seat posts and handlebar stems are fully adjustable. For example, if you are 1.73m tall, you could use the 53 or 57 size frame. Personally, we would recommend to go with the bigger frame if you are not sure. If you not a confident rider, we suggest to go with a smaller frame size if your height sits between 2 choices. Please note that some models come in limited frame options.