The right duvet should keep you comfortably warm without feeling unnecessarily heavy or making you overheat at night. Some people love light, lofty down, while others prefer easy-care microfibre or a bamboo-fibre blend. If your bedroom temperature changes across the seasons, duvet warmth matters too.

In this guide, we explain how to choose a duvet, compare down, bamboo and hypoallergenic fillings, clarify the 20/80, 70/30 and 90/10 ratios, and help you choose between summer, all-season and winter designs.

1. Start with the warmth you actually need

Consider your bedroom temperature and personal sleeping preferences before thickness or price. If you tend to overheat, a lighter duvet might suit you even in winter. If your bedroom is cool, a warmer duvet can feel more comfortable.

• Summer duvet – the smallest filling quantity, designed for warmer nights or those who prefer a lighter cover.
• All-season duvet – a medium filling quantity, often practical for most of the year.
• Winter duvet – more filling and warmth for cooler bedrooms or people who get cold easily.

Note: filling weight in g/m² is not the same as thermal insulation (TOG). Down and synthetic duvets of the same weight may feel different in warmth. Compare warmth grades within each collection.

2. Down duvets: what do 20/80, 70/30 and 90/10 mean?

Down duvets contain natural goose down and feathers. Down is soft and light and traps warmth, while feathers add more structure and weight. The filling ratio tells you the percentage of down compared with feathers.

Rustilė Eco 20/80: a more structured feel

The Rustilė Eco 20/80 duvet contains 20% goose down and 80% feathers. Consider it if you prefer a more noticeable duvet weight and a firmer feel. Its cover is 100% cotton.

Rustilė Standard 70/30: a balance of loft and softness

The Rustilė Standard 70/30 duvet contains 70% down and 30% feathers. More down adds loft and softness, while feathers still provide some structure. It is an appealing choice if you enjoy a softer, reasonably light natural duvet.

Rustilė Exclusive 90/10: an especially light, lofty feel

The Rustilė Exclusive 90/10 duvet contains 90% goose down and 10% feathers. The very high down content makes it particularly fluffy, soft and light. It suits people looking for a luxurious natural duvet with warmth without unnecessary weight.

All three collections offer summer, all-season and winter options. The down percentage alone does not tell you whether a duvet is intended for winter; the filling amount matters too.

3. Bamboo-fibre duvet: when is it a good choice?

The Rustilė Natural bamboo-fibre duvet contains 50% bamboo fibre and 50% synthetic fibre, with a 100% cotton cover. This blend provides resilience, loft and shape retention. It is important to know that the filling is not 100% bamboo.

Natural is available as summer (200 g/m²), all-season (300 g/m²) and winter (400 g/m²). It is worth considering if you want an alternative to down and feathers but still prefer a cotton duvet cover.

4. Hypoallergenic duvet: practical synthetic filling

The Rustilė Care hypoallergenic microfibre duvet has a resilient polyester-fibre filling and a soft microfibre cover. It feels light and lofty, and the synthetic filling is generally practical to care for.

Care comes in 200 g/m² summer, 300 g/m² all-season and 400 g/m² winter versions. Consider it if you avoid animal-origin fillings or want straightforward care. However, the word 'hypoallergenic' never guarantees that no individual will react to a product.

5. Which duvet matches your sleeping habits?

If you share a bed, pay attention to duvet size. Choose dimensions that comfortably cover both sleepers, and match your duvet cover to the actual duvet measurements. Explore the complete duvet collection.

6. Caring for your duvet

Down duvets must be dried thoroughly after washing so moisture does not remain trapped inside the filling. Follow the specific product care label; some fillings may be better suited to professional cleaning.

Synthetic duvets can often be simpler to care for, but the exact washing and drying instructions depend on the product. Never rely on the filling category alone; always check its label.

For any duvet, occasional fluffing and airing in a dry environment can help maintain an even filling and a pleasant feel.

Frequently asked questions

Are down duvets always warmer than synthetic ones?

No. Warmth depends on filling quantity, material properties, construction and the room temperature. Choose the warmth level separately from the filling type.

Is a 90/10 duvet always better than a 20/80 duvet?

Not for everyone. A 90/10 duvet generally appeals to those who prefer a lighter, loftier feel; 20/80 may be preferable if you enjoy the structure feathers provide.

What should I choose if I overheat at night?

Start with a summer-weight duvet and consider your bedroom temperature. Even in winter, a lighter duvet may be more comfortable in a well-heated room.

Is the bamboo duvet filled entirely with bamboo?

No. Rustilė Natural contains 50% bamboo fibre and 50% synthetic fibre, with a 100% cotton cover.

The takeaway

First decide how much warmth you need, then which filling feels best, and finally choose the right size. Compare Eco, Standard and Exclusive for natural down and feathers, or Natural and Care for alternative fillings.

Browse all Rustilė duvets or create your own duvet-and-pillow set.

For further guidance on caring for down products, see the European Down and Feather Association (EDFA) consumer advice.

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