Ribbing with Circular Needles

I have begun a Military Helmet Liner on a 16" circular needle, size 6. It is knit 2, purl 2. After kniting a few rows, it does not look like the ribbing that is done on straight needles. It is less defined and more flat looking. What am I doing wrong?

You’re knitting the knits and purling the purls right? If so then give it more time. It takes an inch or more to really start getting more definition and start pulling in like ribbing does.

Make sure you have a multiple of 4 stitches, just any even number won’t work. And yep, it may take several rounds for it to look like ribbing.