I just wanted to add a tip of the hat, cowboy hat that is, to Darn Tough. I own several pairs, actually too many pairs. I always wear merino wool socks. DTs are on my feet as I write this. I absolutely can not stand the clammy feel of other fabrics on my feet. My career was spent working in the field and large wilderness areas of MT and WY. I have yet to wear out a pair. I do have one pair that think will wear out the big toe one of these days, but then we will see how truthful the lifetime guarantee is. In my experience the DTs are superior to the many pairs of Smartwool, Icebreaker, and other brands I've worn and wore out over the years. Honestly, I do not expect them to last a "lifetime", but still well worth the money I've spent on DTs.