The RC Pro 130 Vacuum Full Fit comes with a unique construction that provides support in three distinct areas: The upper and lower cuffs are fixed for optimal power transfer; in the liner, highly insulated cushioning is located in the ankle and toe, areas prone to cold and pressure, for improved comfort; and an elastic element is placed in the exterior arch and heel of the liner for natural flex and fit while ripping. Fischer’s Vacuum Full Fit process helps mold the entire boot, both shell and liner, to the anatomy of your foot for a boot fully customized to you. Your feet will cry tears of joy.