Tri Bri is a hat knit in the round with one color yarn using the Brioche Stitch. The hat can be knit slouchy or can be worked to a longer length so that it can be folded up and worn like a beanie or watch cap.
The crown is worked in 3 sections with decreases on each end of each section with a set of 3 sts in between the decreases.
Give Brioche a try with the Tri Bri Hat. It is a bit of a challenge until you get the hang of it and learn the new language and stitch construction. Learning new things is good for your brain!