US Men: S-3-5.5; M-6-8.5; L-9-11.5; XL-12-14.5
-Merino wool provides thermo-neutral insulation for varying temperatures and activities
-High-density impact zones under heels and forefeet (where impact is greatest) protect against shock and abrasion
-Mesh ventilation zones, arch braces and ultralight cushioning ensure comfortable without bulkiness
-Multiribbed cuffs and flat-knit toe seams add comfort
-Made in USA.