This is not so much a pattern as a guideline for a simple double wrap cowl which can also be worn as a large loop around the neck (when your neck begins to overheat!) The nice thing about knitting a neck warmer this way is that it takes less yarn (and time) than a scarf yet is more substantial than a single cowl. Have fun trying different versions!
General knitting skills.
One size, approximately 6-8" wide x 44" long (22" when folded in half and seamed).
US 10.5 needles or appropriate size for your yarn.
This will depend upon your yarn and pattern st. Sample: 20 sts = 4" inch in 2x2 rib.