From pattern description:

Gauge for Austermann yarn: 6 sts and 9 rows - 4” over garter stitch using US15 needles. Yardage: 74 yards

Finished measurements: 58” (147 cm) from cuff to cuff x 16” (41cm) long. (Note: Because the single rib stretches and the (Austermann) yarn is bulky, the garment measurement cuff-to-cuff can vary.)

Pattern includes one construction diagram.