Rainbow jacket
I used schachenmayr catania cotton in sports weight knitted up on old fashioned size 12 needles(approx 2.75mm). The pattern suggested 3.5mm needles to give 27 stitches, 34 rows but my tension on the smaller needles came out at 20 stitches, 29 rows. I just added two extra rows for each colour stripe an two more colour panels to get the required length.