I don't even remember when I bought these. They've been sitting unused at home for ages. The four colors from blue to green in the image are definitely unused. The gray-ish color on the left is a different type, but since the size is the same, I've included it as part of the set. All are 100% polyester. 100m *Regarding the gray thread, I don't remember using it, but it was stored in a way that suggests it might have been used. It doesn't fit my past sewing machines, so maybe I used it to sew on buttons or something. There's still quite a bit left. Please refrain from purchasing if you have any concerns.