Help your customers stitch a naturally dyed rainbow! This thread is perfect for: - embroidery - visible mending - sashiko stitching - boro stitching Each box includes eight 10-yard skeins. Seven skeins are naturally dyed in the rainbow colors shown and one skein is undyed. Floss is: - 100% silk - Peace silk, meaning no silkworms were harmed in its making - naturally dyed - washable, permanent colors - 20/2 weight, similar to size 5 cotton perle thread This silk embroidery floss was hand dyed by myself using a variety of natural dyes, many that I grow or gather myself. Most colors are semi-solid, meaning there is some subtle color variation.