Wide feet and Sidi's traditional racing lasts have never been friends. The Mega designation changes that equation, adding 4mm across the ball of the foot along with more volume through the instep and a wider heel cup. If you've admired Sidi's build quality and serviceability from afar while cramming your feet into competitors' wide offerings, the Genius 10 Mega finally opens the door to Italian construction without the width compromise.

The Carbon Composite 20 sole anchors the Genius 10's performance. Sidi injects carbon fiber into a nylon matrix to create an outsole that delivers race-ready stiffness while resisting the temperature sensitivity and water absorption that plague some carbon constructions. The nylon maintains consistent response whether you're riding in summer heat or wet spring conditions, and the wider sole platform provides a stable base that complements the Mega last's additional forefoot room. A millimetric scale molded into the sole simplifies cleat positioning during fit sessions.

Dual Tecno-3 dials control fit along the entire length of the shoe. The lower dial pulls from two anchor points to wrap the forefoot and midfoot snugly against your foot's contours, while the upper dial works independently for instep tension. Sidi's proprietary wire material runs without binding, allowing quick mid-ride adjustments when foot swell demands a tension release. The Soft Instep 4 Closure System pairs with the dial setup, using a wide anatomical strap backed by thermo-formed EVA to distribute pressure evenly. You can adjust this strap from both sides to center it precisely, accommodating high or low instep profiles without requiring aftermarket extenders.... Read More