DO NOT DAMAGE THE HAIR - These soft sponge curlers do not use heat or electricity. They are foam curlers designed for use while sleeping. SAVE TIME - Use these sponge foam cushion hair styling rollers before going to sleep to achieve a beautiful curly hairstyle the next morning. INDIVIDUAL DESIGN - Features a candy-shaped design with a foam core. Flexible, durable, washable, and reusable for comfortable use. EASY TO USE - When your hair is about 70% dry, roll it with the foam curlers. They work overnight while you sleep. These sponge soft hair curlers are reusable for multiple styling sessions. VERSATILE STYLING OPTIONS - For longer hair, two rollers can be used together as one. Most users create one wave per roller. For long hair, rolling the lower section can enhance volume and texture. Rolling in different directions (inward or outward) creates different types of curls and waves. Experiment with techniques to achieve your desired look. Create your own beauty with these hair rollers.