From the pattern:

Stockinette and garter stripes in blended colors make for a subtle yet interesting man’s cardigan. Add a different stripe sequence that builds quickly and effortlessly in the sleeves.

Notions needed:
QTY(6) 22mm (7/8 inch) buttons

The yarn requirements are:
675-950 yds of Color A
625-875 yds of Color B
Yardage numbers above represent total yardage range.