one piece and uses the woolease thick and quick yarn. my friend in st. louis actually knit it. we'd get on the phone daily for 1/2-2 hours and go row by row so we'd both be on the same row going in the same direction. it was the only way she could get this done as she got so confused at the neck, when you had to bind off stitches but in another section add stitches. whew it's done. short for me but versatile for the fall. when i got the coat i had to sew up all the seams. was easy going from right front at knee to end of the sleeve. i also had to do the 8 rows of ribbing garter rows on each sleeve.