I have purchased a few. They are what is left after cutting the pre cuts. Sometimes the strips are wider than 2 1/2" and I have actually gotten almost all the fabrics in the same collection. I have also gotten a bag that contained parts of 2 separate collections and didn't go together at all. I have trimmed the oversize strips down to 2 1/2" and used them just like I would anywhere else I would use a 2 1/2" strip.