The Boston Hat is a very simple hat made with DK weight yarn. The hat is worked in the round, bottom-up, starting with a ribbing. After the ribbing is done, a simple lace section is worked. In this section, the first half of the stitches is made in stockinette stitch and the second half is a lace pattern composed of yarn overs and decreases. From round to round, the lace part is narrowing until it measures approximately two inches, creating a triangle of small holes.