Jury is still out. I am familiar with textile processing from fiber, spinning, yarn comp and quality, and fine gauge knits. Not an expert, but knowledgeable enough to know that while these socks and well designed with good raw materials, their size block is off. These socks are small upon receipt. I am holding full judgement until I finish three wearings with three cycles of machine wash warm, tumble dry low. I predict progressive shrinkage and remain a little nervous. I purchased two pair and reserving one pair in new condition to compare. Will be happy to report back to anyone interested in further information. (GRIP6 Wool Sock Builder Overland Blue / X-Large / 2-Pair)