Indigo blue—one of the world’s oldest textile dyes—became popular in England after Vasco da Gama discovered the sea route to India in the 15th century. Indigo hydrangeas, blue birds, butterflies and dragonflies fill your home with natural symbols of joy, beauty and good luck. Tea Towel: A pleasure to use and display. 20" x 28" with handy corner hang tab. Natural, 100% cotton; machine wash.