I haven't worn these much, so they don't seem to have any noticeable stains. I think they were spats for pelvic correction, but my memory is vague, so I think they could be used for sports, etc. The lining is partially mesh. Waist (flat): approx. 35cm Inseam: approx. 61cm Please note that these are amateur measurements, so please use them as a reference. I would appreciate it if you could understand that these have been stored at home. There are no smokers in my family. I don't have any pets either. I will use recycled packaging materials. How about these for walking? (^^)