Note: Products are shipped randomly, not necessarily the pink color in the picture, so purchase with caution. This product is vacuum-packed; it is recommended to let it sit for 3 days before use to restore it to a round shape. Material: These hair curlers are made of foam rubber and plastic, with a soft and lightweight design that is safe and comfortable. Don't worry about damaging your hair, making them ideal for women and children. Easy to Use: The curlers grip the hair without the need for pins or clips. Simply open the fixed plastic band, wrap the hair on the curler, close the fixed band, and go to sleep. Wake up to beautiful curls. Save Time: You can use these foam rubber hair curlers while you sleep. The soft material won't cause any sleep problems and can create various hairstyles you want without damaging your hair. Multifunction: These foam rubber hair curlers can also be used as a headband to roll up bangs for daily makeup, facials, and skincare, making them very suitable for home, hotels, beauty salons, and more. Size: 4.0 cm