Go to wool shop.
I couldn’t see how many balls of wool needed until I had bought the pattern. I bought Bloomsbury dk, which was listed as recommended but not what was used. I did my tension swatch correctly. The jumper is knitted in the round so it’s difficult to see the width, after using 1 Ball realised that I would need way more than the 5 balls. It could be lovely in an oversized jumper but I couldn’t afford to buy mare balls at that price. I had. I put the stitches onto 2 needles and found it was 2.5...