This pattern has 3 sizes of a jumper and 3 sizes for a cardigan
22”-24” 56-61 cm chest
26”-28” 66-71cm chest
30”-32” 76-81cm chest
in 4 different weights of yarn in 50g balls
4ply, uses 4,6 or 8 balls
DK, uses 6,8 or 10 balls
Aran uses 7, 10 or 12 balls
Chunky. Uses 8, 11 or 13 balls

Note yarn amounts are for cardigan, sweater uses slightly less.