37.5 is AMAZING not just in this Rise Extra Light Cushion Crew but their entire line. Fit, Feel, Breathability, Comfort and the ability for quick dry in those wet/stream crossings or if needed a quick wash while you're out in the wild. When you're packing light and only need a couple pairs these are a go to. Highly Recommend! Truly Best socks I have owned.
i carried 2 pairs from maine to georgia on the appalachian trail and they still look as good as the day i bought them! very impressed with the quality and durability. i paired them with injini toe sock liners and could wear a single pair for days on end with no washing.
With one pair I have ran over 1000 miles, including the leadville 100, speedgoat 50k, mcdowell mountain frenzy 50k, and still no holes. I never had to worry about changing them in river crossings as they dried quickly. I have ran in temps from -10F to 95F with complete comfort Highly recommend this one.