Stilly, I too have a good sturdy skirt in which the elastic has expired. I hate to get rid of the skirt just because of the elastic, which has cracked and crackled and broken into various pieces inside the waistband. It would be quite a job to open up that neatly-sewn waistband in order to extract the broken-up elastic and install new elastic, but with a garment this serviceable it might be worth it.