From pattern description in the book, p. 61

Openwork and solid bands make up this attractive ripple pattern. Work deep and narrow stripes or change the depth of the stripes to give a completely new look; choosing one color for the openwork bands to constrast with dark and light solid stripes.

Foundation chain: multiple of 14 +2. Gauge is flexible depending on yarn and hook choice.

It is rated as Difficult

Related pattern: Patience, same pattern in different color sequence