Every mattress in the range includes Silentnight's unique Eco comfort fibres, ingeniously formed from recycled plastic. Additionally, through Silentnight's recycling scheme, all Eco comfort mattresses are fully recyclable, reducing the amount of waste that goes to landfill. The success is laid bare, with the Eco comfort range preventing 105 million plastic bottles from reaching the ocean. A medium mattress is targeted at side sleepers; cushioning can be provided to pressure points such as the shoulders and hips, promoting healthy spine alignment. Medium Firm

Pros: Thanks to its cotton filling, this duvet is naturally breathable and temperature regulating, so it will release air when it's too hot, and keep it in when it's chillier. The 190 thread count cotton cover helps keep the filling evenly distributed and the full cotton duvet also means it is hypoallergenic. Plus, it's lightweight and machine washable (although do note it should be washed at 40). Wash your duvet every few months as this will prevent dust mites from gathering and keep it clean. Always follow the manufacturer’s instructions though, especially when it comes to natural fibres, as many require a more delicate wash cycle or dry cleaning.Our expert says:"We’ve increased the choice in this size range, so you can now choose from some of our most popular ranges. Worth a mention is the Supreme Canadiansuperking duvet – stuffed with what we think is the world’s best down. It’s incredibly light and puffy: a real luxury buy. But lots of customers simply love the Ultimate Hungariansuperking duvet, too: the great-quality down means that it does a superb job of keeping your body at the right temperature all year long." What size should a super king duvet be? This type of mattress combines gel foam with a sprung or foam base to provide tailored support and prevent heat buildup to ensure a comfortable sleeping temperature. Gel foam is designed to regulate the temperature throughout the night; therefore, a cooling gel mattress is perfect for those who feel too hot at night. If the idea of a memory foam mattress appeals to you, but you are deterred by the heat retention properties, then a gel foam mattress is ideal. Geltex

The duvet is quilted so you won't find it all gathering at one end, and the cotton casing, which has a 233 thread count, is also soft against your skin.

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Tog rating: Spring/Summer layer has a tog rating of 3.5, and the Autumn/Winter layer has a tog rating of 7. Secure them together to create a 10.5 tog duvet. The duvet caters to the sleeping requirements of both you and your partner, so you can say goodbye to any disagreements about being too hot or too cold at night! This exceptional duvet ensures that both of you are kept at your own optimum temperature for ultimate comfort. The Yours and Mine duvet has a unique two togs in one design. One half features a higher tog and the other a lighter tog, creating a cooler half for those who get hot at night and a warmer half for those who feel the chill.