The super cool summer 45 tog bed duvet has a cotton polyester rich cover it has an ultra soft luxury hollow fibre polyester filling making it a comfortable easy care product it is machine washable for easy maintenancethe duvet performs like a natural white goose down duvet and has a tog of 45 super cool ratingthis super cool summer 45 tog bed duvet is the ultimate in luxury it is cool for summer and has proven nonallergenic qualities the duvet is also filled and covered with premium quality lay