Bi Bri Hat

This 2 color brioche hat is knit in the round from the bottom up. This pattern is extremely versatile, as it is sized from infant to large adult, and you can use sport, DK, worsted, or aran weight yarn.
 
Skill Level
Intermediate
 
Sizes
Infant (Toddler, Child, Adult S, M, L)
 
Finished Dimensions
15 ( 17, 19, 21, 23, 25) in/38 (43, 48.5, 53.5, 58.5, 63.5) cm in unstretched circumference. Note that brioche can be very stretchy, giving you 3-5 inches of stretch!
 
Materials
 
25-75 g Main Color (MC) sport , DK,  worsted, or aran-weight yarn, 25-75 g Contrasting Color (CC) yarn. MC & CC should be the same weight yarn.
Size 3-6 US/3.25-4 mm 16-in/40-cm circular needles, or size needed to obtain gauge
Size 3-6 US/3.25-4 mm double-pointed needles, or size neede to obtain gauge
3 stitch markers, 1 in color A, 2 in color B
Tapestry needle
 
Gauge
Sport weight
17 sts = 4 in/10 cm in Brioche Stitch
DK weight
16 sts = 4 in/10 cm in Brioche Stitch
Worsted weight
15 sts = 4 in/10 cm in Brioche Stitch
Aran weight
14 sts = 4 in/10 cm in Brioche Stitch