Nordica HF Pro 120 GW Mens Ski BootsFlex index 120 Last width shape 102mm Only HF model with a Powerstrap Nordica's new HF series is changing skiers perceptions about ski boot comfort and ease of use. Single lever rear closure doesn't even need to be operated with your hands. No ski boot now, or in the history of ski boots has been easier to put on and take off than HF. And, it is packed with all the latest Nordica engineering to perform well on the snow also. This is the top performing