Cast on 88 (96, 104, 112) sts.
Row 1 (RS): Knit. Continue in Garter st (k every row) until piece measures about 4 1/2 (5, 5 1/2, 6) in. (11.5 (12. 5, 14, 15) cm) from beg, end with a RS row.
Divide for Fronts and Back
Next Row (WS): K23 (25, 27, 29) sts and sl to a holder for Left Front, k42 (46, 50, 54) sts and sl to a holder for Back, k remaining 23 (25, 27, 29) sts for Right Front.
Continue in Garter st on Right Front sts only for 3 (3, 3 1/2, 4) in. (7.5 (7.5, 9, 10) cm more, end with a WS row.
Next (Buttonhole) Row (RS): k3, yarn over, k 2 sts together (buttonhole), k to end of row. Continue in Garter st for 9 rows then repeat Buttonhole Row. Knit one more row (WS).
Next Row (RS): Bind off 12 (13, 16, 17) sts, k to end of row. Knit 2 rows. Bind off.
Transfer sts for Back from holder back to needle. Join yarn and work even in Garter st until Back measures same as Right Front. Bind off.
Transfer sts for Left Front from holder back to needle. Join yarn and work as for Right Front, reversing shaping and omitting buttonholes.
SLEEVE (make 2)
Cast on 23 (23, 25, 27) sts. Working in Garter st, kfb in first and last st of every 4th (4th, 5th, 6th) row 11 (11, 12, 13) times – 45 (45, 49, 53) sts after all incs have been worked. Work even in Garter st (without doing anymore incs) until Sleeve measures 6 (7, 8, 10) in. (15 (18, 20.5, 25.5) cm) from beg. Bind off.
Cast on 68 (72, 77, 81) sts. Work in Garter st until piece measures 6 (6 1/2, 7, 8) in. (15 (16.5, 18, 20.5) cm) from beg. Bind off.
Sew shoulder seams. Sew Sleeve seams. Sew in Sleeves. Fold Hood in half and seam bound-off edge for back of Hood. Sew Hood to neck edge. Sew on buttons. Weave in ends.
Wrap yarn around cardboard 20 times. Cut a 20 in. (51 cm) length of C and thread into large-eyed blunt needle. Insert needle under all strands at upper edge of cardboard. Pull tightly and knot securely near strands. Cut yarn loops at lower edge of cardboard. Trim ends evenly. With crochet hook, chain remaining length of tied strand for about 4 in. (10 cm). Fasten off. Thread chain to inside of Hood and knot to secure.