-Style # 15517800 -Rib knitting -Size : W 7.67" x H 8.26" -100% Cotton. -Made with Indigo yarn used for making denim. The core of the yarn is white, so it's aging the more you use and wash it. *There is a lot difference because the color is faded by the washing process. Please note that the colors may differ slightly from the photos. -Made in Japan <Care Instruction> Please wash separately. If you rub it against something else when it is wet with sweat or rain, or if you leave it in contact with it, the color may transfer. If it is exposed to sunlight for a long time while sweating, it may discolor.