This is a pre-printed piece of indigo cotton with a pattern of shippo-tsunagi ("Seven Treasures" or interlocking circles), very handy for learning sashiko stitching. Sashiko is a traditional Japanese style of quilting that is often used for decoration.

The fabric measures 13" x 13" (34 cm x 34 cm) folded in half and is printed with dye that will wash out. 
 
Olympus #203
Made in Japan
100% Cotton