This series of hats - They Might Be Hats (For Boys) - is based on the Particle Man song from They Might Be Giants’ Flood Album. Triangle Hat got it’s name because - well - guess. Just try to keep it away from
Particle Hat is all I’m saying.

The hat includes basic instructions for increasing or decreasing the size, and it works great for men or women. The triangle pattern is created using knit and purl stitches, and the pattern is easy to memorize and follow.