Hachette Thermal Blackout Curtains Eyelet Ring Top Including Pair of Tiebacks. These curtains feature a unique super triple weave blackout that blocks 80-99% of light. They are designed to control room temperature, keeping rooms warm in winter and cool in summer. Made from 100% Polyester, they are machine washable on a cool wash and can be tumble dried. These curtains provide a prestige finish to your furnishings and help reduce outside noise pollution due to their triple weave technology, acting as a perfect thermal insulator. They also protect wooden floors, furniture, and furnishings from direct sunlight and heat. Available in various sizes and colours, including eyelet and pencil pleat designs.