Cloth Curling Rollers?

I have naturally curly hair. My stylist taught me a trick about putting gel on your hands and then twirl your hair, and it tames the curls. It works wonders! However, I have to take a shower before doing that so that my hair is wet. I heard about cloth rollers, where you just cut some cloth and just use them like curlers. Do they work? How do you use them? Could someone give me some step-by-step instructions?