Note Before casting on, wind off two small balls of Yarn A, one small ball of Yarn B, and one small ball of Yarn C. These will be used for the colour blocks at the bottom of the hat. To work the colour blocks, first cast on as stated below in the separate colours. As you work in the colour blocks, ensure that the blocks are joined by crossing the previous working yarn over the new working yarn on each row. When you neaten off the ends of yarn as you sew up the hat, make sure to neaten off the cast-off edge between colour changes. Cast on 20 ( 23: 25: 26) sts using 4mm needles and Yarn A; cast on 40 ( 42: 46: 52) sts using 4mm needles and Yarn B; cast on 20 ( 23: 25: 26) sts using 4mm needles and Yarn A. [80 ( 88: 96: 104) sts] Keeping the colour changes as set, work single rib as foll: Row 1 ( WS) *K1, P1; rep from * to end. Repeat Row 1, 4 more times. Change to 5mm needles and stocking stitch (1 row knit, 1 row purl) and work Chart in the appropriate size as foll: Row 1 K20 ( 23: 25: 26) in Yarn A, work Row 1 of Chart for your size, K20 ( 23: 25: 26) in Yarn A. Row 2 P20 ( 23: 25: 26) in Yarn A, work row 2 of Chart for your size, P20 ( 23: 25: 26) in Yarn A. Cont in patt as set until Chart has been worked Cont in st st in Yarn A only until work measures 12 ( 14: 15: 16.75) cm.