This version of this brand are ribbed on the ankle. Not a problem, but a detail not visible in the photo.Excelente calidadI was tired of women’s socks that had to stretch to fit one’s foot as it always felt as it is was putting pressure on my toes to curl under. And these were sizes 9 - 12 for a size 8 1/2 foot! I tried these men’s socks and they do not need to stretch to fit my foot and so are the most comfortable sock ever!All the other Calvin socks I got have a ck symbol on the side, these ones vaguely say Calvin Klein on the bottom and that’s it. They look like regular socks to me, which makes me suspicious. Otherwise they do the job.after 2 months use, I'm quite pleased with these. Fit for sz.10 shoe wearer is fine; good weight, soft, no pilling or shrinkage. Allegedly have 43% cotton, mixed with polyester, acrylic, and elastane -- hopefully fibers will add durability -- a problem with all cotton. I'll update review in a year to report how they hold up.I bought these because my other Calvin Klein socks felt soft and breathable. They didn't disappoint but the area around the calves feel tight, sometimes uncomfortable.The product seems quality and perfect fir for mens 8size . Wash them before wear its feels more comfortableVery soft but much larger than anticipated. My boyfriend has size 10 feet and after a wash would still bunch up on his. However they are very soft and he still wears them around the house. Just not to work as planned.