The ideal saddle height can be described by the angle of the knee at full extension. Typically, men will be close to 142° and women maybe 1-2° higher. The difference is due to flexibility, with looser female hamstrings allowing the knee to extend further. Tight hamstrings will inhibit the extension of the knee, so many people find that being less than 140° may suit them better. The key to finding the ideal saddle height is to use knee angles and hamstring flexibility to get close, then fine tune (up or down 1-2mm at a time) until in the ‘sweet spot’. Please note that these are dynamic measurements, i.e. whilst pedalling and that static measurements may be different.