I don’t use recycled clothing for quilting. If I am going to make a quilt, I want it to last. With that being said, there is a lot of good fabric in men’s shirts if you buy gently used ones. If I didn’t have a good stash or if money was an issue, I would use them. I have bought sale sheets at Walmart for backings before. I now have a quilt shop close that sells 108X108 backings for $36 so I use those now.