Designed to fit a cushion pad approximately 45cms x 45cms

Using 4mm needles, cast on 85sts
Knit every row until you have enough yarn to cast off loosely and have enough of the yarn to sew up 3 sides.

No zip involved, just sew up the pad within the knitted fabric.

Very easy to knit.
Easy to sew up.
Further details and explanations are on the website on the Garter Stitch Cushion page - left hand side of the website page