The BF Verlengen buitenschoen from OutdoorXL is a single-piece shell extension designed for ski boot bootfitting. It’s intended for use when adjusting or repairing the outer shell of your ski boots, giving boot technicians the ability to fine-tune length and volume without overhauling the entire boot.
This extension lets you adapt your existing shell to changing fit requirements—whether compensating for liner wear or accommodating a slightly larger last—by inserting or replacing just this one component. As part of the boot adjustments category, it keeps the process focused and efficient, avoiding unnecessary work on other parts of the boot.