Large-diameter heatless rods create flowing, loose curls or relaxed waves 100% vegan satin prevents breakage & friction, gliding through hair without tugging A better alternative to heat styling for healthier, stronger strands over time Flexible design bends to secure rollers in place, eliminating the need for pins or clips Comfortable to sleep in & can be worn day or night while air drying hair Great for setting naturally curly or wavy hair & adding volume to fine or straight hair For all hair types & texture Measures 10 inches long with 1.2 inches in diameter. OEKO-TEX® Certified:  This certifies that our satin is safe, sustainable, and environmentally friendly.