Five ten Kestrel Pro BOA MTB Shoes Synthetic upper which is fast-drying weather friendly. These are brand new and fantastic shoes, little bit big for me. FEATURES: -Stealth® C4™ rubber for unbeatbale grip and ease of entry on clipless pedals. - Non-slip heel cup to securly lock the heel in place. - Clipless model which is compatable with all mountainbike pedals. - Carbon infused nylon shank for added stiffness. - Upper:- Boa® Closure System can be quickly and easily adjusted and offers a custom fit. A Stealth® rubber outsole keeps you sure-footed over ice and snow. - All-mountain pedal power in an all-weather build. These men´s mountain bike shoes feature a stiff outsole for efficient power transfer to your pedals. The wide clipless-compatible outsole with Stealth® C4™ rubber provides confident footing on and off the bike. Mesh inserts help maintain breathability, and the Boa® Closure System lets you dial in a secure fit.