I think we all know that in order to take care of nylons, you wash them with delicates or by hand, and air drying is usually best.  People who don't do this and then give terrible reviews just don't know better I guess. I am however, a little lazy, and these are little girl's nylons, so I can't say I'm going to put that much effort into keeping them "nice".  I wash these with my daughter's other laundry and toss them into the dryer too.  MY MISTAKE was when I didn't notice her little winter coat in the wash and the nylons ended up snagged on the velcro in the jacket.  Still, I was able to separate the two without the nylons developing any runs.  These should last a couple years I suspect if I can keep them away from velcro in the future.  Only reason I don't give it 5 stars is because they were a little thinner than I anticipated from the picture.  Not a huge deal though in my opinion.