I was reading about decent socks and googled Icebreaker deals.
K2 has a few models and sizes:
The best deal is probably the Icebreaker Hike UL Liner Crew Mens Socks - Black - $14.98 - Sizes S/XL
Some other options:
Icebreaker Hike + Heavy Crew Mens Socks $34.99
Icebreaker Hike + Lite Crew Men Socks - Earthern Heather/Bark/Oak $19.98 - S
Icebreaker Hike + Lite Crew Mens Socks - Jet Heather/Red/Black $23.97 - S/XL
Icebreaker Hike UL Liner Crew Womens Socks - Black $17.97 - WS/WL
FREE SHIPPING OVER $49 | SAME DAY DISPATCH BEFORE 1PM EST
*Coupon code of 10% after subscribing to the newsletter, but the discount is not applied to sale orders
This is a thin "sock liner" - worn under socks when hiking to give better protection from cold, for comfort & can help prevent blisters. Won't last long worn as a sock. But good when hiking worn under socks.
Sock liners are great on multiday hikes in cold country - like the Overland Track (took 12days, with water freezing overnight). Easy to wash, absorbs the sweat, protects the feet.
Bought a lot of gear in-store with K2 - always happy with the service & advice from experienced people.