In order to provide the best out-of-box fit possible, Tecnica’s Mach1 boots come in three different lasts—98 mm, 100 mm and 103 mm—with the Mach1 Pro W LV catering to women with narrower feet. To further improve your foot accommodations, the boot’s customizable upper cuff allows for a 10-percent increase or 5-percent decrease in volume. The boot features a 12-degree forward lean, and its spine is 3 mm higher than previous Tecnica models in order to accommodate a woman’s natural stance, thus improving balance and reducing fatigue. With a 115 flex rating, the Mach1 Pro W LV is definitely geared toward skiers that seek a stiffer, high performance fit for their alpine pursuits.