Scarpe da Corsa Bontrager Sonic

The Bontrager Sonic is a combination of a very affordable shoe and beautiful looks. They're fitted with a BOA retention system which you won't find at this price with any other shoe manufacturer. The PowerTruss sole supports both novice and more advanced riders with a decent power transfer efficiency. In short: the Sonic women's road cycling shoes offer an excellent fit and striking new looks but at a budget intended for everyone.

• inForm Race last which offers a slightly wider, performance-orientated fit
• Nylon composiet Bronze Series sole
• Power Truss sole design to improve stiffness without a noticeable increase in weight
• Boa L6-dial for a precisely tuned fit
• Stiffness index 8 out of 14
• Synthetic upper with mesh ventilation inserts
• Suitable for both 2-bolt SPD and 3-bolt cleats
• Women Specific Design developed to provide women with a better fit and more comfort

Detailed explanation of sizing in mm
In order to help you, as best we can, to choose the right size shoe we have measured all the shoes ourselves. All that's left for you to do is measure your own foot length, and we'll tell you which shoe size per brand suits you best. Does your foot length in mm not appear on the relevant product's page? Then that particular shoe is not available in a size that suits your foot length.

You can easily measure your foot length using an A4 sheet of paper, placed on the floor against a wall. Stand with one foot on the piece of paper, with your heel against the wall. Draw a line above your big toe (or above the index toe if that is longer). Now mark your other foot on the paper in the same way. Measure both - the measurement of your longest foot is your foot length in mm's! Please note: some manufacturers have their own measuring system, and as a result what appears on the shoebox can deviate from what we have measured.

What shoe size you need can differ per brand. This is because certain brands wear larger or smaller. To help you get the perfect fit, we've also classified the shoes as narrow, average, or wide fit. Read all about it in our blog!