Kids & adults cardigan made with DK.

To fit chest:

Kids
22" / 56cm - 100g
24" / 61cm - 150g
26" / 66cm - 150g
28" / 71cm - 200g
30" / 76cm - 200g

Adult
32-34" / 81-86cm - 250g
36-38" / 91-97cm - 300g
40-42" / 102-107cm - 350g
44-46" / 112-117cm - 400g
48-50" / 122-127cm - 450g

You will need:
4mm needle
3.25mm needle
3.25mm circular needle 100cm