The pattern is available here after you join TKGA.org for $35 per year, possibly the best deal in the knitting world.

ITR means “In the Round” and pied is defined as “multi-colored, like the Pied Piper.” Since intarsia is almost always worked flat, and in fact requires reversing directions at some point on every cycle when worked in the round, a few methods have been created to allow intarsia to be used in a seamless, circular garment. Some methods simply choose a point of reversal and perform some special stitch to reverse directions without leaving too obvious a link where the reversal is done. I have never found a method that made that link completely invisible. However, there is one method of working the reversal at one selected color change that reproduces the identical linkage at that color change that appears at every other color change around the loop. After it is completed, there is no way to tell which color change was the point of reversal. They are all identical.

Sometimes the explanation for how to do that can be confusing, so people think it is very difficult. In fact, it is quite easy once you understand it. Here is a video about my approach to the method which I hope will not only explain it clearly but also convince you that it is not difficult.

By designing a pattern with large solid blocks of color, I have avoided the need to use bobbins or yarn butterflies that make intarsia more difficult. For my initial foray into this technique, I wanted to keep it as simple as possible. As a result, this has turned out to be one of the easiest patterns I have designed.