The scaled-down BOA Fit System is straightforward for small hands to adjust, with just one dial to tighten the whole outer shell.Just like our adult boots, the Micron comes with a heat-moldable liner that's comfy straight out of the box but can be custom fitted in store.The Micron doesn't cheap out on fit. We've used 1:1 lasting, which means a specific shell, liner and footbed for every full and half size. Tech Details Last 8º Forward Lean (1:1 Lasting) BOA Type H4 Dial Closure Single Zone Boa Dial Outsole Gravity Liner Silver Level Heat Formable Liner Liner Closure Integrated Lacing System with Lace Lock Insole 3D-Molded Single-Density