This slouch hat is is airy enough for warmer weather, especially if you use cotton yarn, but also cozy enough to keep your head warm if using wool etc. Make it with a peak or without, stripes or no stripes, it's still cute. :-) BASIC SKILLS NECESSARY 2-dc cluster 3-dc cluster Double Crochet - DC Single Crochet - SC GAUGE 3 3-dc clusters and 2 1/2 rows = 2 inches. SIZING / FINISHED MEASUREMENTS 22 inch circumference - Suitable for most adults. 10 inches from the crown to the rim edge. 13 inches at it's widest point. Peak should be about two inches long and 9 inches wide.