The pattern also says it requires a cable needle and stitch holders.

Sizes: chest size
34” (86cm)
36” (91cm)
38” (97cm)
40” (102cm)
42” (107cm)
44” (112cm)

Yarn Requirements: Aran weight, 100g balls
7 (7, 8, 8, 8, 9) balls

The yarn types given are all the possibilities listed in the pattern - you will only need one type.

No stitch diagram.