Soft and cushiony without the bulk of rollers, flexi rods come in many different sizes and can be used on all different hair textures. They are are great to use on damp or dry hair and can achieve all ranges of curls from ringlets to waves. Here are two tutorials on how to use them:
P.S. - When using flexi rods on damp hair, a setting lotion or curl cream would work best to wrap and set the hair to the rod. When using the rods with dry hair, use a serum to coat and wrap your hair to the rod.