The stiffest boot in the Hawx Ultra W women's line, the Atomic Hawx Ultra 115 S BOA W delivers a low-volume 98mm fit and uncompromising performance for female skiers. By adopting an ultra-thin profile and then reinforcing key power zones, Prolite technology delivers a stable, lightweight boot. The BOA® Fit System evenly wraps the foot for a more secure feel and a micro-adjustable fit. For a personalized fit, the heat-moldable Platinum Mimic liner precisely molds to the shape of your foot, while a dense, asymmetrical liner technology called Power Ankle Lock ensures a compact, durable fit. Memory Fit allows for thermal tuning and customization of the shell and cuff. Power Shift technology allows for forward lean adjustment, to change the angle of your stance or adapt the boot's flex. The removable Adaptive Fit System (AFS) collar provides more space in the calf, while the 3D Stretch Toe Box allows more room in the big toe.