The Silentnight Luxury Collection Duvet is a high quality duvet with a super soft hollow fiber filling and a soft to the touch microfibre cover. Offering the luxurious feeling of sleeping in a beautiful hotel, it promises the warmth you need for cold winter nights. It is also completely machine washable. While we all love the feel of a soft, luxurious duvet, the secret to a restful night's sleep also lies in choosing the right tog value for the season. Sleep experts agree that the ideal room temperature for deep sleep is around 18.3°C or 18.5 degrees Celsius. Therefore, in the summer months you should opt for a duvet of 2.5 to 7.5 tog, and in autumn a tog value of 10.5 is generally considered ideal. But to ensure a good night's sleep during the winter months - not to mention saving on central heating costs - you need a duvet with a 13.5 to 15.0 tog value. This luxury collection from Silentnight is available in a range of tog values ​​and, just as importantly, combines a very soft hollow fiber filling with a soft microfibre cover, making it a popular choice for those who like a very 'cozy' duvet in winter. Not only does the embossed microfiber cover combine with the soft fibers inside to promise a luxurious, hotel-grade feel, but it's also cooler than cotton on warm nights and provides extra warmth and comfort on colder nights. The hollow fiber filling is hypoallergenic and this high quality comforter is machine washable. Available in single, double, king-size and super king-size beds.