Alpina Nordic Alaska XP Boot backcountry skiing This is achieved through a

This is achieved through a combination of high quality foams

but the function will still be there

The NB10K gen 2 has been improved with a much more visible and easily identifiable remaining battery level indicator - no more eye strain

the fabric provides good 50+ UPF protection

and trusted by guides on Everest and Denali for a decade

Alpina Nordic Alaska XP Boot backcountry skiing This is achieved through aNordic touring boot equipped for backcountry exploration Sturdy leather and textile upper provides lightweight fit Waterproof ApliteX membrane keeps socks moisture free Thinsulate insulation provides feet with all day warmth Anatomic footbed ensures a perfect fit for lasting comfort Rotefella Xplore sole offers flexibility, stability, and traction Lace closure helps mold boot to foot and ankle for support Item #ALPZ25C