I bought a package of these socks and loved them so much I ordered a second package (same size, color, etc), but the second pack of socks are about 1/8-1/4 smaller than the previous set of socks. The second set of socks are much tighter around my ankle and feel noticeable smaller and tighter than the previous package. They technically still fit albeit a little uncomfortable, so I didn't return them, but I wish I had returned the second pack and repurchased.

The socks are of great quality, hence is why I wanted to reorder them, but they seem to be lacking in the quality control department.