These Floss Holders maintain the shape of the floss when storing it. Just slip the ends of the floss over each end of the holder and the label over the area provided. Each holder holds a full skein of DMC embroidery floss without having to wind it. 10 holders per pack. The Floss Holders can be placed in the Binder Inserts which we also sell. Floss (cotton skeins) are not included.