Sidi Aertis Women's Mountain Shoes Sleek speed The Sidi Aertis Mountain Shoes are designed for the rider who wants a capable shoe off-road, with high-performance efficiency and streamlined styling that doesn't look out of place on a road or gravel ride. The Aertis features a nylon and carbon fiber sole for increased stiffness and improved pedaling efficiency, with an outer tread design that provides ample grip without weighing down the shoe. The Aertis uses the famed Tecno-3 dial system for quick fit adjustments, paired with an angled Firmor Closure hook-and-loop strap for added adjustability. Whether you're lining up for a cross country race, a gravel epic, or just a spirited ride on mixed terrain, the Sidi Aertis has what you're looking for. Features Tecno-3 dial closure system provides even tension without hotspots, and is replaceable for added longevity Sidi SR17 carbon fiber nylon sole for increased stiffness and pedaling efficiency Firmor Closure hook-and-loop strap for increased fit adjustment, especially laterally Perforated upper for improved breathability Toe spike compatible for improved grip in muddy conditions Mid-sized tread design for walking comfort and grip without excess weight SPECIFICATIONSClosure type Tecno-3 dial with hook-and-loop strap Sole Material Carbon Fiber and Nylon Cleat Compatibility2-Bolt SPD-Type Intended Use XC, Gravel Sizing US Men EUUS Women6. 13976. 539. 57. 66. 4407. 97. 2418. 77. 641. 59. 18429. 58. 442. 59. 98. 84310. 39. 243. 510. 79. 644-1044. 5-10. 445-10. 845. 5-11. 246-11. 947-12. 347. 5-12. 748-13. 148. 5-13. 549-13. 949. 5-14. 350- | Sidi | Aertis Women's Mountain Shoes | Size 40 In Black/black | Nylon