Cotton 100% Colors: White#01, Natural#02, Aqua Blue#08, Denim Blue#09, Cobalt Blue#10, Dark Navy#11, Cyan Blue#17, Royal Blue#18, Blue & White#52 Length: 20m(21.8yard) per skain. Material: 100% cotton Made in Japan Superior Japanese thread developed to use for Sashiko stitching.　From beginners to experts, everybody can enjoy Japanese traditional stitching with soft feeling. They are used too for quilting and embroidery, knitting as well as Sashiko stitching.