This pattern is for two sizes of zigzag ripple cowls in fingering and worsted weights. You can also easily adjust the pattern sizing for shorter or longer (or wider) lengths as desired. You can simply add or subtract multiples of 12 stitches to make it longer or shorter. The instructions include information for each of the weights of yarn.

Gauge:
Fingering: 16 stitches and 22 rows per 4 inches knit in pattern in the round
Worsted: 14 stitches and 20 rows per 4 inches knit in pattern in the round

Finished dimensions:
Fingering: Roughly 9 inches high and 30 inches around.
Worsted: Roughly 10 inches high and 42 inches around.

Materials:
Yarn:
Fingering: 35 grams
Worsted: 140 grams

Needles:
Fingering: 2.25mm (US size 1) circular needle or size necessary to achieve gauge
Worsted: 5mm (US size 8) circular needle or size necessary to achieve gauge

The instructions are both written and charted.