This pattern uses back loop half double crochets, and puff stitches to make a lovely texture that works up great with self-striping or solid colored yarns.
The puff stitches are worked into the back loop of the previous half double crochet row.
A complete repeat (4 rows) Will equal 3 centimeters for your gauge. This is a tighter gauge you may want to use a 5mm crochet hook to meet the gauge if you crochet loose.