You can use any type of cotton yarn

This is a simple knit-purl scarf, good for a beginner knitter. You can add a “wave” to make it longer or shorter. You can also use several different sized needles for every other “wave” to give it a changed look. Any 4-ply worsted yarn can be used, or you can use a smaller ply yarn for a more open, lacy look. It is a very versatile pattern.