The BF Verlengen buitenschoen paar from OutdoorXL is an accessory for ski boot fitting that adds extension pieces to the outer shells of ski boots. Supplied as a matching pair, it’s designed to help adjust the shell length during the bootfitting process.
By fitting these extension elements, bootfitters can fine-tune the internal volume and length of a ski boot without needing to replace the entire shell. This added flexibility can be especially useful when accommodating thicker socks, custom footbeds or slight changes in foot shape over the season.