This stitch is a combination of 2 other stitches, the mesh stitch and the 9-loop puff stitch.

The “free pattern” linked is to the stitch tutorial.
Click here for the video tutorial.

Patterns using this stitch combination:

• Rainbow Blanket CAL

• Porch ‘n Picnic Blanket

• Spumoni Bookmark

• Spumoni Bauble Ornament