best socks ever! I LOVE my PhD socks but these are better for more serious boots, and a more serious day, no problems at all for two days straight. They are worth every penny, and I look forward to owning more in the future. IMO these are WAY better than Thorlos, practically no comparison.
UPDATE: recently developed a stress fracture in my left foot, and I have to wear a boot constantly, this is the ONLY sock I own that works all day under the boot, I wore one for five days before it needed changing, they don't slip, itch too much, or lose their padding over the days, PERFECT!! and those same thorlos I mentioned earlier are TERRIBLE underneath, and less comfortable than plain cotton...