Upgrade Heatless Curls: Upgraded curling rod headband is made of satin material on the outside and soft material on the inside, providing a softer and more comfortable experience while sleeping compared to the previous version. Helps keep hair in place, holds hair securely, and has no chemical odor. No Heat Curlers: Heatless hair curler offers a new way to curl your hair, designed to create beautiful, bouncy curls without damaging your hair with heat. No Damage Silk Curlers: Hair rollers are long enough to be securely fastened and suitable for thick, thin, curly, or straight hair. Rounded edges and smooth surface help prevent pulling and hair damage. Easy to Use: Place the curling rod over your head like a headband. Clip it at the top or secure one side with a scrunchie like a ponytail, then wrap dry hair around the other side of the ribbon and secure with a scrunchie at the bottom. Wind tightly and begin near the top of the head. Can be worn for one to two hours during the day or overnight with dry hair.