I inherited these when a friend passed away long before he should have. I don’t know how long he had them, but they were well used. He told me he would do two hour sessions. I thought that was nuts, but we and also did a few 12 hour days riding about 175 miles typically. I’ve had my rollers since 1999. I’ve tried to add to the rust bubbles that it came with. I think I changed the rubber band once, but can’t remember for sure. There have been years when I didn’t get on them at