Poorly made product from China
First time I tried these on, it was obvious the size was smaller than stated. While zipping one of them up, I apparently did not hold my "expression correctly" and the zipper came loose from the sock. It was OK. I had iron-on fabric mending tape. After ironing on a section of fabric mend tape, I stitched through the tape to ensure the sock would not come loose from the tape. I guess I'm back to my original online retailer. Their socks always perform as advertised.
Rating: 3 stars