They hold up fantastically well. I haven't had any problems with holes or wearing thin (make sure to keep your toe nails trimmed!) They are like a second skin and very comfortable. I have found that the OTC cotton and wool stay up all day without needing to be adjusted. The only problem for some could be that the cotton is quite thin. Not thin enough for your shoes to feel lose though... If you're interested contact me and I might be able to get you a good deal on some.