It's hard to beat alpaca-blend socks that are designed for durability and comfort.  "Surino" socks are suri alpaca and merino wool blended with Hydrotec, nylon-silver, and elastic.  Odor control. Thermal regulation. Ease into "Ahhhh". What more can you ask for?
 
US-grown natural fibers.  Spun and knitted in the US.  Machine wash and dry.
 
XL fits Women's shoe size 13.5-15 and Men's 12-14
L fits Women's shoe size 10-12.5 and Men's 9-12
M fits Women's shoe size 6-9.5 and Men's 5-9
 
30% Suri alpaca
30% Hydrotec
20% Merino wool
19% nylon-silver/1% elastic