From the Knit Rowan website:
Knit this slip stitch homeware cushion, a free pattern to download as part of the Pure Wool Worsted Home Décor Online Collection. Designed by Ute Rehner using our wonderfully soft machine washable worsted weight yarn, Pure Wool Worsted (wool), this cushion has a contrasting square pattern on the front with plain stocking stitch on the back.

This is a FREE pattern available to members of the KnitRowan website.

Finished width dimensions:
Completed cushion measures approximately in width 50 cm (19.5 inches) and in height: 24 cm (9.5 inches).

Yarn Information:
A - Mustard 131
1 skein
219 yards

B - Bottle 140
1 skein
219 yards

C - Oxygen 137
1 skein
219 yards

Extras::
QTY (4) buttons
Not mentioned, but estimated a square cushion at 9 inches by 9 inches would be needed.

Gauge notes:
- Yarn in pattern states it comes in 219 yard skeins, but Rowan’s website states the skeins each are 209 yards.