Whereas the Alpina “Alaska” BC (i.e. NNNBC) and “Alaska” 75 (i.e. NN-3-pin) have the identical upper, with different soles-
The current Alpina “Alaska” BC and “Alaska” XP are completely different boots.
As of this date, I have only been out in the “Alaska” XP for a few turs-
I will write a more thorough review of the XP later this season.
But for those considering either of these boots:
The XP has a significantly stiffer sole than the BC
The XP is significantly narrower than the BC
The XP is significantly smaller volume than the BC
The upper of the XP is laterally stiffer than the BC
The BC is slightly taller than the XP
The XP is lighter than the BC
Sizing-
For reference, I am technically:
a 42.5EU in terms of length for a hiking boot.
Have a medium width foot
Have a small-volume foot
Have a relatively narrow heel and ankle
While I can get a performance ski boot fit in a 42EU Alaska BC- there is no way I could wear the 42EU XP- it is so much narrower and smaller-volume than the BC.
(the length is consistent- the interior length of the 43 XP is the same as my 43 Alaska BC)
And even sizing up to the 43 XP, I have had to customize my lacing system to deal with the narrow last.
So current conclusion- these two boots are very different, despite having almost the same model name.
Don’t assume that an equivalent Alaska BC/75 will have the same fit as an XP.
