SIDI Speed 2 Mountain Clipless Shoes Fast and Efficient The SIDI MTB Speed 2 is a fast, efficient, and durable shoe tested for the most difficult off-road terrain. The ease of adjustment and clean design make it reliable and intuitive to use. The Tecno-3 System dials in fit along the entire length of the shoe, adapting the upper to the shape of the foot for a customized fit. Like most SIDI small parts, the Tecno-3 System is serviceable and replaceable. The SIDI MTB Competition Sole has been specifically designed for mountain biking and can be fitted with two toe spikes on the front for traction in difficult and muddy conditions. Toe spikes are sold separately. The Reinforced Heel cup stabilizes and supports the heel. Anatomically shaped to reduce heel slip and increase power transfer. Features Tecno-3 System dials in fit along the entire length of the shoe, adapting the upper to the shape of the foot for a customized fit The SIDI MTB Competition Sole has been specifically designed for mountain biking and can be fitted with two toe spikes on the front for traction in difficult and muddy conditions The Reinforced Heel cup stabilizes and supports the heel. Anatomically shaped to reduce heel slip and increase power transfer SPECIFICATIONSUpper Material Synthetic Closure type Tecno-3 System Outsole Rubber, Composite Cleat Compatibility2-Bolt SPDIntended Use MTB | Sidi | Speed 2 Mountain Clipless Shoes Men's | Size 46 In Green/black | Rubber