Reliable material: These heat hair rollers are made of sponge and ABS, soft and durable, and designed for comfortable long use. The soft material does not cause discomfort. Overnight curls: Very soft and comfortable to wear overnight, so you won't feel them while you sleep. Wake up with naturally curly hair, saving time in the morning and helping you get a good rest. Hair styling versatility: Flexible sponge curlers work with different hair types and textures. Create curls to your liking and highlight your charm for a variety of occasions. Safe home styling: Made of foam sponge, durable and reliable. No heating required, safe and gentle, does not pull hair, and can be used for hair styling at home many times. Use scenarios Overnight routine for natural curls: Wear the rollers overnight to set curls softly, then wake up with ready, naturallooking curls without heat. Busy morning routine: Roll hair after washing, sleep, and in the morning you have a styled look with minimal effort and no heat damage. Travel or event styling: A safe, non heated option for styling while traveling or preparing for special occasions, with reliable results at home or on the go.