The Attack 14 GW is compatible with adult alpine ski boots (ISO 5355 TYPE A) and adult walk ski boots (ISO 23223 TYPE A)

perfect fit

And then there are the Salomon MTN Explore W Alpine Touring Ski Boots

FIT: Slim LAYER: Base Layers

FORWARD LEAN:15°-18° + Release for Walking

Atomic Hawx Ultra 130 S GW skipolesize_105cm The Attack 14 GW isA comfortable and extremely powerful alpine ski boot, the top end Atomic Hawx Ultra 130 S GW offers a low volume, 98mm fit to deliver Legendary Hawx Feel and performance to expert all mountain skiers with narrower feet. By using the slimmest profile possible and then reinforcing critical power transfer zones, our Prolite technology creates a supremely lightweight, stable boot for hard charging skiers. Completely customizable, a new Mimic Platinum