The Chevron hat, also called the Ripple hat, is a common crochet technique used in a new way. I Love a good hat that has a splash of detail to keep it interesting without being overwhelming. The Crochet chevron can be made in a variety of sizes. Crochet chevron hat pattern is written to be made in 3 colors. This crochet hat pattern is very versatile. Crochet chevron is a great technique. Crochet chevron hat pattern.