As the softest flexing boot in the adult Promachine models, the Promachine 100 is more forgiving while offering low-volume performance, utilizing stiffer plastic along the spine of the shell to create lateral stability and fast energy transfer. Those qualities make it ideal for a skier with a lighter touch who still demands performance from their boot. Like the other boots in the Promachine family, the 100 is low-volume, lightweight, and energetic. It also employs Primaloft in the liner for added warmth and a cushier feel. An anatomical 98mm-last shell and 3D liner, that can be further customized using infrared heating, makes for incredibly responsive, precise turns and ample rebound. For an easy turning, low-volume boot that performs well in all conditions, look no further than the Promachine 100.