From the Churchmouse website:
FINISHED SIZE
One size: Poncho: 22 x 50"/56 x 127cm, before folding.
Cowl: 24"/61cm around x 8"/20cm tall.
YARN
Poncho with cowl: 9 skeins Blue Sky Fibers Baby Alpaca (110 yds/100m each); shown lower left and center in Color 802.
Or approx. 980 yds/896m of an equivalent dk-weight yarn.
Poncho without cowl: 5 skeins Rowan Felted Tweed (191 yds/175m each); shown lower center and right in Color 172.
Or approx. 840 yds/768 m of an equivalent dk-weight yarn.
NEEDLES & NOTIONS
US 6 (4mm) needles, or size to obtain gauge; plus 2 sizes larger for binding off.
16–24"/40–60cm circular needle in gauge size for cowl.
Size H (5mm) or larger crochet hook for provisional cast-on.
Blocking wires.
GAUGE
20 sts/27 rows= 4"/10cm in stockinette stitch, wet-blocked and steam pressed.