I have not been a fan of using sheets for backings. Not that I have ever used a sheet as a backing, so no real experience , but only because I’ve always heard that its not a good idea. Well I had a customer want to bring me two t-shirt quilts and use sheets for backings. She said that she had read my page and that I didn’t recommend using sheets, but ask if I would make an exception and use them for her. She assured me that she had used them before and never had an issue with them. So I told her that I would use them, but I had never actually used sheets – she trusted me and said she was ok if they didn’t come out perfect. Well, I have since quilted about 6 quilts for her, using sheets for everyone of them. I didn’t have any issues and they came out wonderful. She was so excited how they turned out. So not sure if I would recommend a sheet for everyone to use, or to use on every quilt – but I’m not opposed to them and will use again in the future. But I would recommend getting a good quality high thread count sheet. And of course make sure its 3-4 inches bigger than your quilt on all four sides. Happy piecing!!!!!