Please Note: Products are shipped randomly and may not be the pink color shown in the picture. Purchase with caution. This product is vacuum-packed; allow it to sit for 3 days before use to restore its round shape. Material: These hair curlers are made of soft and lightweight sponge and plastic. They are safe and comfortable, so you don't have to worry about damaging your hair. Perfect for women and children alike. Easy to Use: These rollers attach to your hair without the need for pins or clips. Simply open the fixed plastic band, wrap your hair around the roller, close the band, and go to sleep. Wake up to beautiful curls! Save Time: You can use these foam hair rollers while you sleep. The soft material won't disturb your sleep, and you can create various hairstyles without damaging your hair. Multifunctional: These hair sponge rollers can also be used as headbands to roll up your bangs during daily makeup, facials, and more. Perfect for home, hotels, beauty salons, and more. Size: 4.0 cm