Head wraps are great, especially when you are having a bad hair day. I've seen some go for up to $50!
This is one from Nordstrom for $24. And all it is, is a piece of knit fabric!
Here is my version!
Knit Fabric, tape measure, and a clothing label (optional).
First measure around your head like a headband and multiply it by 1.75. That is your length, don't worry about seam allowance, knit fabric is very forgiving!
Your headband can be any width you want times two! Mine was about 6 1/2 inches!
Fold in half hot dog style, right sides together and sew or serge up the long side. (I recommend serging since sewing knits is a bit difficult.)
Turn inside out. Serge/sew the 2 short ends together so you have a big loop.
Twist TWICE. In the picture it is only twisted once for an example but in order to get the turban look, it needs to be twisted twice.
Fold down and sew together the 2 NON-TWISTED sides. (At this point if you choose you can add the clothing label!)
That's it! Enjoy and Happy Head wrapping!