The Atomic Hawx Ultra XTD 105 BOA W is a versatile 98mm narrow-last, medium 105 flex freeride touring boot that delivers comfort and power, on-piste or out of bounds. This boot is built with Prolite technology, which takes a trim profile and adds reinforcement to critical energy zones for strong downhill performance. The BOA Fit System improves shell wrapping with bi-directional micro-adjustments, increasing foothold for all-day comfort. Memory Fit forms the shell and cuff, and the Mimic Gold liner takes the exact shape of your foot when heat-molded. Ankle Lock technology in the liner provides extra reinforcement around the ankle to hold your foot in position while skiing. This boot comes with Free/Lock 4.5, a robust ski/walk mechanism that securely locks the cuff to the shell. The cuff offers 54 of epic natural movement and a more comfortable position when standing.