A ski boot assembly may include an outer shell having a relatively hard portion and a relatively soft portion. A cuff may be attached to the hard portion for pivot action relative to the outer shell. The cuff may extend around the outer shell, leaving an instep cover of the soft portion exposed. The cuff may include overlapping portions that are hinge coupled to the cuff. A flex bar may be inserted into a shaft of the hard portion. A bootboard may be situated above the sole plate, and be provided with ridges. A shoe can be inserted into the outer shell. The sole of the shoe may be provided with grooves that receive the ridges of the bootboard. A locking mechanism can be mounted on the hard portion of the outer shell to selectively engage with the heel of the shoe.

A ski boot assembly may include an outer shell having a relatively hard portion and a relatively soft portion. A cuff may be attached to the hard portion for pivot action relative to the outer shell. The cuff may extend around the outer shell, leaving an instep cover of the soft portion exposed. The cuff may include overlapping portions that are hinge coupled to the cuff. A flex bar may be inserted into a shaft of the hard portion. A bootboard may be situated above the sole plate, and be provided with ridges. A shoe can be inserted into the outer shell. The sole of the shoe may be provided with grooves that receive the ridges of the bootboard. A locking mechanism can be mounted on the hard portion of the outer shell to selectively engage with the heel of the shoe.

One or more tuning elements may be associated with a receiver, such as a pocket or other channel, disposed on an item of footwear, such as a snowboarding boot. The receiver adjustably receives the tuning element. The adjustable arrangement of the tuning element and receiver allows the intended user of the item of footwear to tune the item for performance, comfort, cosmetic, or other characteristics. In certain embodiments, the tuning elements are removably associated with a boot to allow for flex control.