YARN, GAUGE, SIZE AND MACHINE Working this from the top down makes super neat edges on all the ribbed hems Unisex sizes of 41.5, 43.5, 45,47,50” finished chest. Using Eastport Alpaca yarn at stitch size 5-7 on the mid-gauge gets a gauge of 4.5 stitches/6.7 rows/inch. Have 20-24 oz. of yarn on hand. Substitute yarns may require a little less by weight.