6 Sizes in 1 boot * The two buckle boots (16.0-18.5 and 19.0-22.0) are to be used with children"s bindings. The larger (22.5-25.5) three buckle boots can be used with any bindings. * With a quick adjustment, the height at the top rear of the boot can be raised or lowered. * Micro-adjustment capability so you can clamp down the boot at the perfectly comfortable position.