From the Knit Rowan website:
Knit this accessory shoulder bag, a free pattern to download as part of the Pure Wool Worsted Online Collection. Designed by Melissa Mitchell using our wonderfully soft machine washable worsted weight yarn, Pure Wool Worsted (wool), this slouchy bag features an all over cable design and stocking stitch strap.

Finished dimensions:
Completed bag measures approximately 17 inches (43 cm) wide at base and 13 inches (33 cm) tall, not including straps.

Yarn Information:
Photographed in Redcurrant 120
3 skeins
627 yards

Extras:
QTY (1) piece of ½ yard (.5 meter) of 45 inches (114.5 cm) fabric for lining
QTY (1) 2½ inches (6.5 cm) button
QTY (1) Sewing needle and matching thread for lining and attaching button