Emphasizing durability and style, the Sidi Spider Carbon SRS Techno is the perfect choice for high-performance, high mileage cross-country riders or cyclocross racers. Breathable Technomicro upper keeps your feet comfortable, while an integrated rubber toe guard provides a new level of protection and durability. Spider's unique Sole Replacement System (SRS) features replaceable rubber tread, bolted to the shoe's new durable carbon composite sole, which is 40 grams lighter than the previous Dragon sole. The patented system allows easy replacement of worn-out tread, increasing the life of the shoe. The design also provides a slight amount of flex in the toe while retaining excellent stiffness and power transfer. The 2-way caliper buckle offers secure, easy on-bike adjustment with incremental tightening and loosening for the perfect fit. An adjustable soft instep closure system and padded tongue eliminates pressure points for lasting comfort, while the high security Velcro straps provide a secured position on the foot. Standard width.