As a woman with size 11 feet, until now it has been impossible to find no-show socks that are comfy, durable and do not slip down my heel constantly. These socks are fantastic and I highly recommend them! They are comfy and stay in place all day. I have also put them in the washing machine and dryer many times now and they are still good as new.I have tried 4 brands and these are the best, so good, I now have 16 pairs, my size was medium, and my daughter, wife and brother all asked for a set! These DO not slide down on the ankle like other No shows. Highly recommended!Every brand of minimalist sock I’ve tried has been made of paper mache, it seems. They disintegrate on your feet or in the washing machine.These have lasted for several months under tennis shoes, boat shoes, and some monk style dress shoes in summer.I recommend buying a small washable garment bag (similar to what you may wash bras in) and putting all the minimalist socks in it for the washing machine. These little guys disappear unless they’re contained.These socks seem very durable, and they fit perfectly. I have purchased boat shoe liner-style socks before from other brands, but they were VERY thin. Inevitably, they all ended up with holes in them. These seem like they will last much longer.Also, they're very comfortable and seem to do a good job wicking moisture away.I have been searching good now-show socks for my dress shoes. Prior to these socks, I have been struggling with now-show socks crumbling under my feet. I am very happy with the performance of these no-show socks.If you love the barefoot look when you ware your loafers but they are uncomfortable without socks or your shoes smell like feet, this sock is for you. Soft, comfortable, breathable and will not slip down into your shoes thanks to small Silicone stripsI wear a 10 1/2 shoe. I first bought the mediums and they probably would have worked but were a tad looser than I liked. Sent them back and ordered the small. They just fit and hugged my feet well. They have been washed several times with no problems. I ordered a second pack to keep as a spare. Very happy with them.They are no-show socks. They fit on my feet. With sneakers (Converse All Star, low top) they truly don't show. Now if you, like me, bought a pair of Tecovas' summer loafers, they do peek out. Best feature is the bit of rubberized material on the heel, keeps them from slipping in a shoe. Downside - if you wear them under the covers, you might wake up with one or two bare feet.No further comment neededThese socks are very thin and super low in profile. Have saved my feet from rubbing when I have wanted to wear a shoe which normally I would have looked to have worn barefoot. Little rubber grips on the inside of the sock try to hold the sock in place against the Achilles heel. Works reasonably well.I’ve put these through the wash many times and perform exactly the same. I was at the upper end of the size range and the fit is quite snug.I never wear trainers, but almost always wear loafer style shoes. These socks are perfect, because there is no sock visible when worn! Thanks!!???I bought these to wear with my loafers but it is not warm enough yet to do so. I look forward though to when it will be and will appreciate themGreat socks, washed lovely & not lost their shape,