I bought these a few years ago and only wore them a few times that year. I don't think there are any particular stains, but please understand that I may have overlooked something. The material tends to attract lint, so please be aware of that as well. I don't have any pets. They are size L, but I think they run large. The waist can be adjusted with a drawstring. Photos 1 and 5 are the front. Photos 6 and 7 show the inside and outside of the ankle area. I think there are some areas that look like pilling, so please be sure to enlarge the photos and check. In photo 3, the area where the drawstring is inserted is wavy, but it's the drawstring area, so it should return to normal if you pull it. These have been stored at home, and please refrain from purchasing if you are even slightly concerned, as they are used and from a few years ago. I plan to put them in a waterproof plastic bag and compress them for shipping. Uniqlo Black Pants