Designed for a single-sized mattress Certified asthma and allergy friendly by the Asthma Society of Canada All-season duvet with unique quilting helps keep you warm in the winter and cool in the summer Made with natural long strand silk, which helps block allergens, mites, bed bugs, and pet dander, adjusts to your normal body temperature, and feels luxuriously soft against the skin Wicks moisture away from your body to keep you comfortable throughout the night Resists mould, mildew, and odours Buttons and loops on each corner of the duvet allows you to secure 2 duvets together for added warmth, as well as secure the duvet to the inside of a duvet cover Machine washable with cool water in delicate cycle, and dries in a cool dryer Covered by manufacturer's 10-year warranty