5542
I love it when King Cole do this! They're doing really great basic patterns. Raglans, V necks, cardigans, jumpers - they're doing everything you could ever want and the size range is great. Lots of people even use these for school jumpers, but they'd be great for picture jumpers too and other basic garments.
This has been sampled in King Cole Fashion Aran but literally any King Cole Aran yarn can be used here. You'll need 4.5mm and 5mm needles along with buttons.