North Face Sock Sizes
Sock Size	US Men's Shoe Size	US Women's Shoe Size
S	N/A	N/A
M	5-8.5	N/A
L	9-12.5	N/A
XL	13-15	N/A

Sock Geek Says:

The Arnuva® sock applies the most advanced design techniques and materials to fuel maximum performance.  A favorite of the North face Athlete Team for distances from 5k to more than 100 miles.  Wick Dry® construction helps eliminate blisters caused by friction as it quickly moves moisture away and keeps your feet dry and comfortable.  Spandex paneling provides a sleek memory fit.  Aegis anti-microbial treatment helps eliminate foot odor and disperse heat.  Arch brace holds sock in place and lends support (great feature!).  Dense-cushion sole absorbs shock.  Air panel enhances breathability.

Great snug 2nd skin type of fit!

North Face Arnuva® Sock Specs

Sock Fibers:

97% - Nylon
3% - Spandex