Knit your own Soft Cables Moebius using these clearly-written instructions by knitwear designer Jackie E-S of HeartStrings FiberArts.
Soft Cables Moebius is a continuous one-sided surface that is formed from a rectangular piece of knitting. A reversible eyelet cable-look stitch pattern makes a soft contour about your head and neck. In effect, there is no inside or outside. It is simply a loop with a half twist that will rest comfortably folded about your head or neck.
Any yarn can be used, and made to any size. For example, you might choose a shorter length as a head wrap where the lower part fits more closely under the chin. Or a longer length that allows tucking under a coat. Any size makes a good looking scarf just hanging about the neck. And best of all, they knit up quickly and make great gifts.
Tip: For a variation, you can easily make a regular reversible scarf by omitting the step to join the start and finish of your knitting - just use your favorite method of casting on and casting off.