The pattern continues with one more sc added to the sequence with each row. Increase in this manner until you have 15 rows. The diameter should be about 8 inches.
At this point, simply single crochet each row, with a slip stitch and chain at the end of each row.
Continue in this manner for 6 inches.
Place the hat in the washing machine with soap and hot water. Agitate, checking often to determine the correct size. Have a tape measure ready to measure the circumference. Measure your head circumference and divide it in half. Then, pull out the hat and flatten it to measure the lower edge. Toss it back in the wash until it reaches your size. Then rinse it gently in cold water and shape it for drying. I stuff it with a towel in the shape of a head for drying.