Bearded Beanie

The construction of beanies varies. They can be structured from triangular sections of twill, leather or felt, joined by a button at the crown and seamed together around the sides. Less often, like a yarmulke, the cap is simply a flat circle of cloth with a section cut out to the center and then sewn into a three-dimensional shape. A "technical beanie" is thin and seamless for comfortable use with a helmet, thus is popular among cyclists.
Beanies are often constructed from yarn, using knitting or crochet techniques. While the beanie is considered a fairly humble piece of clothing, it has been elevated to the status of regional art in Alice Springs, Australia- which is claimed by some to be the Beanie Capital of the world.