Black Diamond's inbounds ripper, the O2 binding transmits power from big boots to big skis it's the precision choice for today's aggressive skiers.This product will be shipped directly from Black Diamond and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. Superior power transmission and bomber construction for on piste performance. Solid wire heel yoke for torsion resistance and lateral stability stainless steel toe box. Integrated variable height toe riser matches boot shapes for maximum power and control. Durable under foot cable routing provides progressive power naturally transfers power through the turn. Best matched with a stiff boot O2 fits Mondo 26.5 and up. Three interchangeable compression spring cartridges allow you to adjust the flex to you preference, skiing style, or the snow conditions. Includes climbing wires, mounting hardware, and paper jig. Skis and bindings are shipped unmounted and unadjusted. Skis, boots and bindings including track mounted bindings must be installed, adjusted and tested as a complete system by a qualified ski technician prior to use. Please contact our Customer Service Department at 888.463.6367 for help locating one of our stores that can perform the mounting service..