Natural All Seasons Cotton Fill This natural cotton fill duvet with a '3' warmth rating is perfect for autumn, spring, mild-winter, and ideal for year-round use. It has a stylish 'cotton bud' quilted design, with a soft 233 thread count cotton casing. - Natural 350gsm cotton filling. - Light weight duvet with '3' warmth rating, ideal for year round use. - Stylish 'cotton bud' quilted design with border, with soft 233 thread count cotton fabric. - Fully washable. - 2 year guarantee.- King size 240x210cm100% Cotton