Alpina Nordic Alaska XP Boot backcountry skiing The NB10K gen 2 has

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

Mesh upper with abrasion-resistant weldings

but the function will still be there

Knuckle protectors on the middle

the fabric provides good 50+ UPF protection

Alpina Nordic Alaska XP Boot backcountry skiing The NB10K gen 2 hasNordic 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