Sidi Aertis MTB Shoes

Enjoy limitless adventures with the Aertis MTB shoes from SIDI, where efficiency and flexibility come together harmoniously with unparalleled comfort and stability, specially designed for your personalised cycling adventures. In the MEGA version, these cycling shoes offer extra space around both the ball of your foot and the heel, allowing you to pedal with complete freedom.

Whether you're on a bike or exploring nature on foot, the MTB SR 17 Sole delivers exceptional performance. The non-slip synthetic inserts, optionally expandable with studs, and even the rubberised SIDI logo ensure sublime grip on even the most challenging terrain, while at the same time allowing optimal power transfer to the pedals. Thanks to the FIRMORE CLOSURE System, you will enjoy excellent support, contributing to both comfort and stability.

Moreover, you can rely on proven SIDI features, including the intuitive and high-precision adjustable TECNO-3 twist closure and the durable and lightweight POLITEX upper material. It's time to get on your bike and embrace your adventure!

Technology

Firmor closure
For the driven athletes who steer for optimal power transfer with the added value of excellent lateral support: Shoes equipped with this advanced closure system offer the perfect balance between lateral stability and an impeccable fit, resulting in a sense of security and wearing comfort that is second to none.

MTB SR 17 sole
This nylon sole features thoughtful plastic inserts and a centrally placed SIDI rubber logo to give you ultimate traction when on foot while providing much-needed safety and efficiency when pedalling. The threaded inserts around the cleats are replaceable, and additional inserts are available for optional studs, making this sole compatible with all common MTB pedal systems.

Politex material
An innovative material composed of multiple layers that combines the advantages of compacted PVC, textile and felt. The result is a material that is unyielding to bumps and tears, retains its shape, is colourfast and offers durability that will stand you in good stead for years to come.

TECNO 3 locking system
Designed for maximum comfort and ergonomics, the new TECNO 3 closure system extends the full length of the shoe and uses a nylon cable and twist closure for extremely precise adjustments, even while cycling. This system provides unparalleled fit and closure, allowing your performance to soar to new heights.

User tips

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!