Cast on 63 sts.
Set-up row: K 6, bind off next 3 sts, * k 3, bind off next 3 sts; repeat from * to last 6 sts, k 6.
Next row: P 6, cast on 3, *p 3, cast on 3; repeat from * to last 6 sts, p 6.
Work in St st until piece measures 60 in. [152.5 cm] from beginning, end with a WS row.
Drop-stitch row:K 6, drop next 3 sts from left needle, cast 3 sts onto right needle, *(k 3, drop 3 stitches from left needle, cast 3 sts onto right needle); repeat from * to last 6 stitches, k 6. Unravel dropped sts back to cast on edge. Bind off
Collar Place markers either side of center 20 in. [51 m] along one long side of piece. From RS, pick up and k 65 sts evenly spaced between markers. Work in St st for 9 in. [23 cm]. Bind off. Weave in ends.
Sew on button. Use space created by dropped sts for buttonhole.
Wash by machine on a hot wash/cold rinse cycle with detergent and several pieces of clothing to agitate. To felt additionally, dry by machine on a regular setting until almost dry. Remove from dryer and pull into shape. For more about felting, click here.