This is a “concept” pattern. You can use whatever yarns you want, recommending yarns for a 10 or 10 1/2 needle. Gauge is not critical. The pattern tells you how to make the shape, guidelines how to make it to fit you and how to make the sleeves or sleeveless for a vest. It can be worn as a coat or jacket or vest.
The pattern is available for $5 as a PDF file.