From the Knit Rowan website:
Knit this women’s loose fitting, open back top from Simple Shapes Panama, designed by Sarah Hatton using the divine yarn, Panama (linen, cotton and viscose). Knitted in one piece with rib and stocking stitch detail, grown on sleeves and stunning open back detail, this knitting pattern is suitable for the intermediate knitter.

Finished width dimensions:
46: 51: 57: 63: 70 cm
18: 20: 22.5: 25: 27.5 inches

Yarn Information:
Photographed in Panama colourway Tulip 307
5, 6, 7, 8, 9 skeins
740, 888, 1036, 1184, 1332 yards

Extras:
QTY (1) BN1729 button from Bedecked