There is no one right answer for everyone, but the main elements to take into account when choosing are: SHAPE OF THE BIKE SADDLE It depends primarily on the gender of the cyclist. Usually bike saddle models for women have a different shape designed specifically to fit the cyclist's pelvis. In addition, the shape may vary depending on the position: those who pedal in an aggressive position (more bent forward) should opt for a flat saddle, with more support at the front, where they will unload most of the pressure. Many cyclists who assume this riding position also prefer so-called 'short saddles', which improve the biomechanics of pedalling and optimise the seat in the more 'race' positions. On the other hand, those who pedal in an upright position will unload most of the weight on the ischial bones and should therefore prefer saddles with more rounded shapes and more padding. BIKE SADDLE SIZE As well as varying in length, saddles can vary in width: to choose the right one, it is important to know the distance of your ischial bones. Ischial bones with a width of less than 11-11.5 cm require narrow saddles; wide ischial bones (greater than 11.5-12 cm) require saddles from 143 mm upwards, to optimise comfort, avoid discomfort and improve pedalling biomechanics. PRESENCE OF THE HOLE The hole, also known as the central cut-out, relieves pressure on the soft tissues and pelvic floor area. It is particularly suitable for those who ride in a more "race" position, so with a high difference in height between saddle and handlebars.