The Alinker comes in three frame sizes so far. The inseam is the most important measurement to determine which Alinker suits you best. Each Alinker has an adjustable seat height, giving you a range. First you need to measure your inseam. NOTE: the inseam for the Alinker is to the ground, not the seam of your trousers! (Please refer to the sizing guide for instructions on how to measure).
You need a Small when your inseam measures between 27 and 30.5 inches or 68 and 77.5 cm.
You need a Medium when your inseam measures between 30.5 and 34.5 inches or 77.5 and 87 cm.
You need a Large: when your inseam measures between 34.5 and 39 inches or 87 and 99 cm.
Note that if you are in between sizes, please select the smaller frame size. These measurements are based on a saddle pen with suspension which comes standard on the Alinker. A fixed saddle pen can be fitted, whereby the saddle height will come down by around 1.5 inches or 4 cm.