These thermal curtains are designed for energy efficiency, keeping heat in and light out for maximum insulation. They are easy to hang and easy care. Each package contains two panels. The rings have a 4 cm diameter. These energy-saving curtains help balance room temperature, reduce electricity bills, and minimize external noise. They also protect floors and upholstery from color fading. Made with 100% Polyester Blackout Fabric, they are machine washable or hand washable. Avoid bleaching and use low ironing. It's recommended to measure your poles and windows before purchasing. Please note that tie-backs are not included, and images are for illustration purposes only.