Sidi's Buvel Carbon mountain shoes boast Sidi's exceptionally comfortable Lorica uppers with soft, padded tongues and there are conforming plastic heel cups to cradle your feet. For excellent power transfer, they sport Sidi's stiff, ergonomic Millennium 4 carbon composite soles. They're flexible enough for long-ride comfort and walkability. Plus, for a great fit and feel, zero hot spots, and on-the-fly adjustability, the Buvels sport the classic Sidi ratcheting buckle and strap closures and 2 easy-adjust hook-and-loop straps, too. And you've got ample tread for hike-a-bikes.