Silentnight All Seasons Super King Duvet – 3 in 1 Duvet with 4.5 Tog and 10.5 Tog Quilts Which Combine to Create a 15 Tog Duvet – Ideal for Spring, Summer, Autumn, and Winter – Super King

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Microfibre– the 'luxury' version of hollowfibre, a microfibre fill is made of much finer strands of polyester resulting in a very lightweight duvet with a, yes, more luxurious feel. Some compare microfibre to the feel of down, but it has the upside of not running the risk of animal cruelty. However, again, being made of synthetics, the environmental impact of production and disposal is a concern. Like hollowfibre, microfibre can also cause overheating.

Read more in our guide to what tog duvet to buy as well as finding out when is the right time to switch to a summer duvet. What size duvet do I need? Storage & organisation Furniture Textiles Kitchenware & tableware Kitchens Lighting Decoration Rugs, mats & flooring Beds & mattresses Baby & children Smart home Bathroom products Laundry & cleaning Plants & plant pots Home electronics Home improvement Outdoor living Food & beverages Christmas Shop Shop by roomFirst up, it's synthetic fillings. These duvets are filled with manmade fibres, like polyester and polymide that are made from petroleum-based plastics.

Botanic: Our 100% plant-based range, Botanic, offers an alternative to wool and has won 'Best Duvet' awards in the national media as well as being tried and tested by the Good Housekeeping Institute. They are made from fibres containing TENCEL™Lyocell, created from certified sustainable wood sources, using an Eco award-winning process pioneered by the Lenzing Group. That said, personally, we think 13.5 tog remains one of the best winter duvet weights, with some finding 15 tog can retain heat a little too much during the night and lead to overheating.To help you get to grips with the basics, we've broken down the pros and cons of most common duvet fillings below. Emily Attwood, founder of sleep-brand scooms agrees, ''We’d always advise a 9 tog to 13.5 tog for the winter months as this is ideal and will keep you warm. If your house is always on the warmer side, then a 9 tog duvet would probably suit you better throughout the winter months, and you wouldn’t want to go any higher. This will prevent you from overheating which can disrupt your sleep.' An all-season duvet is made up of two separate duvets of differing togs – one lightweight and one midweight – that can be attached together into one single heavyweight duvet or used separately. The idea being that you can mix and match to ensure you have the perfect weight duvet for spring, summer, autumn, and winter. Don't buy it if: you really want to layer on the warmth. This 13.5 tog duvet is plenty snuggly enough, but we think the wool and down options just pip it to the post in terms of cosiness. That said, this synthetic option is far easier to care for as it's machine washable and can be tumble dried on a low heat setting. Spend some time looking for a new duvet and you'll soon realise there are a whole host of duvet fillings available. From hollow fibre to goose down, synthetic to natural, the array of terms and materials can fast become a little overwhelming.