Chopper by Lisa Cresswell

Chopper

Knitting
DK (11 wpi) ?
10 stitches and 10 rows = 1 inch
in single rib
US 2 - 2.75 mm
US 2½ - 3.0 mm
120 yards (110 m)
One size
English
This pattern is available from shop.stealthbunny.co.uk for £3.60.

You need three different colours so three balls however this will leave you enough yarn to Knit two additional hats in alternative colour ways.