I purchased the shoes Edgewater Stretch - Black, on May 2023, I like these shoes very much, but in the last 3 months these shoes leave black marks on the heels and tops of my socks and it is becoming very significant marks. See the pictures of my socks and shoes. I am not sure what is wrong with these shoes as the interior is still normal, not worn out. The shoes have not been washed and I did not wear them in the rain but I cannot wear them anymore because of the black marks being left on my socks. I cannot wash the black stains out of the socks either. I have bought 2 more pairs of athletic sneakers from you and want to know if they are going to leave black marks on my socks as well. They respond: Thank you for reaching out. Orthofeet has a 6-month warranty policy which protects against manufacturer defects. The lifetime expectancy of Footwear depends on many factors including activity level, body weight, occupation, etc. and can vary from several months to more than a year. And they remove my comment from their website.