The pattern is in both written and chart form. Charts can be found at the end of the written pattern.
Written instructions and charts include a 3 stitch garter border on each edge.

Instructions
Cast on 57 stitches
Knit 8 Rows to form Garter stitch border
Work pattern, as written/charted.
Knit 8 Rows to form Garter stitch border.
Cast off.
Weave in any ends. Block if required. My example was blocked to 40cm wide and 90cm long.
Fold finished fabric in half, seam the cast off and cast on edge together, place cushion pad in centre and seam across the edges.
Sew in ends.

I recommend an Aran, heavy worsted weight yarn or 12Ply with 5.5mm needles.

My example used approximately 150g of 12ply yarn,

This pattern is now available in Danish on the following web page: http://strikkeglad.dk/6329/rombepude/
Big Thanks to Marianne Holmen for the translation.