Please note: Products are shipped randomly, not necessarily in the pink color shown in the picture. Please purchase with caution. This product is vacuum-packed and it is recommended to let it stand for 3 days before use to return to a round shape. Material: These hair rollers are made of foam and plastic, with a soft and lightweight design. They are safe and comfortable, so you don't have to worry about damaging your hair. They are very suitable for both women and children. Easy to use: The rollers grip the hair without the need for pins or clips. Just open the fixed plastic band, wrap your hair around the roller, close the fixed band, and go to sleep. When you wake up, you will have beautiful curls. Save time: You can use these foam rollers while you sleep. The soft material will not cause any sleep problems and you can create different hairstyles you want without damaging your hair. Multifunction: These foam rollers can also be used as a hair band to roll up bangs for daily makeup, facial and facial treatments. They are very suitable for home, hotel, beauty salon and so on. Size 4.0 cm