Less frizz, more fabulous. #curlyhairgoals These satin lined flexi rods create such beautiful curls and waves. The satin lining reduces frizz considerably. The other rods were so horrible to use. My hair would always get caught on the white ending. Or the white ending would pop off, exposing the metal of the rod. They are so easy to use. You can either put on overnight or put on in the morning, all it takes is a hour to create curls. I had no issues sleeping in them. I barely felt them at all.