Breathe Collection: Our Breathe 9 + 4.5 tog double duvet uses our Smartfil fibre blended with natural Modal for breathable comfort, drawing away moisture to maintain an even body temperature and deliver refreshing sleep Designed for All Seasons: A lightweight double bed duvet is perfect for warmer nights, colder nights, and those in-between. The 4.5 tog can be used for summer, the 9 for autumn and spring, and you can clip them both together for a 13.5 tog for winter Ultra-Washable & Practical: This 9 + 4.5 tog duvet double can be home washed at dust-mite busting 60°C and tumble dried quickly, keeping it fresh, hygienic and luxuriously soft so it feels like new after every single wash Hotel Quality at Home: Crafted to exceptional standards, this hotel quality duvet blends indulgence with practicality, ensuring you enjoy the comfort, durability and luxury finish of hotel bedding night after night Innovative Technology: Featuring Smartfil fibres for shape retention, this double quilt 4.5 tog + 9 tog is hypoallergenic, resilient and washable, making it a dependable choice for allergy sufferers who want freshness and long-lasting comfort Eco Excellence: Proudly B Corp certified and pioneering bedding for over 100 years in Britain, this duvet is crafted in our European eco-factory, combining sustainability, heritage and premium comfort you can rely on