The Atomic Men's Hawx Prime 90 All Mountain Ski Boots are for skier who wouldnt quite put themselves in the expert category yet, but are eager to head in that direction. The first things youll notice are the legendary medium fit and forgiving boot flex. It also features Memory Fit, so you can get the completely personalized shell, cuff and liner of a custom ski boot in minutes. Atomics revolutionary Sole Flex on the sole of the boot enhances your balance, underfoot feel and control. The new Memory Fit 3D Silver liner with pre-shaped ankles provides an even better first fit, while 3M™ Thinsulate™ Insulation keeps your feet warm in all conditions, and its WTR compatible for easier walking.