The Silentnight All Seasons duvet includes two duvets that can be used in three different combinations; 4. 5 tog, 10. 5 tog and 15 tog. To create the 15 tog duvet simply fasten the 4. 5tog and 10. 5tog duvets together using the poppers to create a duvet that will keep you warm even in the coldest of seasons. The duvets are filled with soft hollowfibre and covered in microfibre with a stylish grey trim. The 4. 5 tog duvet is ideal for warmer summer months, while the 10. 5tog duvet is great for all-year round use. The All Seasons Duvet gives you the peace of mind that whatever the weather you will have the perfect duvet to help keep you at the right temperature. The duvet comes with a five year manufacturer's guarantee for peace of mind, so you can sleep soundly with your purchase. Our All Seasons duvet is hypoallergenic which means it does not contain any materials that are likely to cause allergies. It is also machine washable at 40°C which means you can keep your duvet fresh and clean for longer. Includes one 4. 5 tog duvet & one 10. 5tog duvet that join together to create a 15 tog duvet Layers of soft hollowfibre to keep you comfortable in every season Hypoallergenic Machine washable at 40°C, encased in a soft microfibre cover for great recovery wash after wash 5 years manufacturer\'s guarantee