This is a cozy buttoned neck warmer with the look of ribbing or cables on one side, and horizontal ridges on the other. Buttons secure it around the neck.

It can easily be made longer to be a traditional scarf.

Tip included on how to use non-shank buttons for a bulky yarn project.

Stitches used:
FSC = Foundation Single Crochet
SC = Single Crochet
DC = Double Crochet
FPTC = Front Post Treble Crochet
BPTC = Back Post Treble Crochet
(Note: the pattern does not explain how to do these stitches. I would classify this pattern as intermediate because of the stitches used.)