My take on this pattern (below) made on my Silver Reed SK860 (6.5mm) gauge knitting machine.
Another first for me .... inserting a zipper
There's a great tutoturial by Interweave Knits ...
Like most things I do, I take information on board and adapt it. On this occasion, instead of using a mini latch tool to make the chain stitch, I marked the rows per inch and made a chain embroidery stitch each side of the zipper as 'the hook' to sew the cushion sides on to. It worked a treat!
This version can be knitted on any standard gauge (4.5mm) knitting machine