Leisure Arts Caps, Hats And Helmets Granny Squares Hat Crochet ePattern- Create the perfect accessory to top off your outfit. Crochet this rolled brim hat with size 4 medium weight yarn and US size G crochet hook. Designed to fit heads that measure 18 1/2” to 21 1/2” in circumference when worked up to correct gauge. Adjust hook size if necessary. Originally published in 131 Caps, Hats And Helmets To Knit And Crochet.