Sidi Dominator Fit Mountain Black- 43.0 Caliper Buckle two-way ratchet for easy on-bike adjustment with incremental tightening and loosening. Adjustable Soft Instep Closure System and padded tongue eliminate pressure points. High Security Velcro wont shift or slip. Breathable, supple and durable vented Technomicro microfiber upper with cooling mesh panels.