All Vanilla Speed boots are easily molded for increased comfort and performance. We have specifically designed our speed inline boots to fit tight rather than loose, as it is much easier to make a boot expand than contract. Our molding system does, however, allow you to improve the fit for a narrow foot in the heel cup and tendon area. Some boots become more pliable than others depending on the makeup of the boot. Please scroll down the page and carefully follow the stepbystep heat molding instructions below to ensure optimum results and avoid damage to your boots. All our materials have been tested for heat molding per our instructions.