Most duvet shopping happens backwards — people choose a cover first, based on colour and fabric, and give almost no thought to what's actually inside it. The fill is what determines how warm you'll be, how the duvet feels against your skin, how often you'll need to wash it, and how long it'll last. Here's how the two main options actually compare.
What Tog Actually Means (Read This Before You Assume)
Tog measures thermal insulation — the higher the number, the warmer the duvet. As a rough seasonal guide: 2.5–4.5 tog suits hot nights and summer, 7–10.5 tog covers mild spring and autumn weather, and 13.5–15 tog is winter-weight.
Here's the part worth knowing before you shop: down doesn't automatically mean "winter-warm." Our 4.5 Tog Luxury Feather Down Quilt Duvet Inner is rated for summer, not winter — the tog rating is about insulation level, and the fill material is a separate question about how that warmth is delivered. So the choice isn't really "down for winter, microfibre for summer" — it's about which fill suits how you want a duvet to feel, in any season.
Feather Down: Warmth Without the Weight
Down clusters trap air far more efficiently than synthetic fibres of the same weight, which is why a down duvet can deliver real warmth while still feeling light on top of you rather than heavy. Our inner is a 90% duck down, 10% duck feather blend inside a 100% cotton casing — the small percentage of feather adds structure and loft retention alongside the down's insulating clusters.
What to expect day to day:
- Feel: Light, soft, moulds to the body rather than sitting stiffly on top of it
- Breathability: Natural fibres regulate temperature better than synthetics, so down tends to feel less clammy
- Care: Needs airing for 24–48 hours before first use to restore loft, and generally does best with professional laundering rather than a home wash
- Longevity: With proper care, down duvets are known for lasting significantly longer than synthetic ones
- Price: The premium option, reflecting both the material and how it performs over years of use
Microfibre: Practical, Consistent, Easier to Live With
Microfibre fill is engineered to mimic the loft and softness of down without using animal-derived material. Our Hypoallergenic Microfibre Duvet Inner uses a 300gsm microfibre fill and is OEKO-TEX® certified, meaning it's tested against harmful substances — a meaningful detail for anything that sits against your skin for eight hours a night.
What to expect day to day:
- Feel: Slightly heavier than down for the same warmth level, but still soft and lightweight
- Allergies: A genuinely different profile from natural fill — no feathers or down clusters for dust mites to settle into, which is why it's specifically positioned as hypoallergenic
- Care: Machine washable and quick-drying, which makes it dramatically easier to maintain — no need for professional cleaning
- Longevity: Synthetic fills are typically replaced more often than down, usually every couple of years with regular use
- Price: The more accessible option, both to buy and to look after
Feather Down vs. Microfibre, Compared
| Feather Down Inner | Microfibre Inner | |
|---|---|---|
| Fill | 90% duck down, 10% duck feather | 300gsm microfibre |
| Casing | 100% cotton | Microfibre fabric |
| Tog | 4.5 (summer-weight) | Not specified — check listing |
| Best for | Light warmth, a soft moulded feel, longer-term investment | Allergy-conscious sleepers, easy home care, budget-friendly |
| Care | Air before first use; professional laundering recommended | Machine washable, quick-drying |
| Sizes | Double, Queen, King, Super King | Double, Queen, King, Super King |
| Price | R2,200 | R1,100 |
Which One Fits You?
If you deal with allergies, want something you can throw in the wash yourself, or prefer not to use animal-derived fill, the microfibre inner is the straightforward choice. If you want the lightest possible warmth-to-weight feel and don't mind a bit more care in exchange for a duvet that lasts, down is worth the investment. Both are genuinely good options; the right one comes down to how much maintenance you want to take on, not which is "better."
FAQ
Is a higher tog rating always warmer, regardless of fill material? Tog measures insulation level specifically, so two duvets with the same tog rating should feel similarly warm — but the fill still affects how that warmth feels (lighter and more moulded with down, slightly heavier with microfibre) and how easy the duvet is to care for.
Are microfibre duvets actually hypoallergenic? They're specifically designed to reduce allergen exposure — without natural feathers or down clusters for dust mites to inhabit, and with OEKO-TEX certification confirming the materials are tested against harmful substances. They're a common recommendation for allergy-prone sleepers, though individual sensitivities vary.
Can I wash a feather down duvet at home? It's generally better to have down duvets professionally laundered — the drying process needs to fully restore the down's loft, which home washing machines and dryers aren't always equipped to do well.
Why is a "4.5 tog" down duvet described as summer-weight rather than warm? Tog measures insulation, not the fill type. A 4.5 tog rating is on the lighter end of the scale regardless of what's inside it, which is why this particular down inner suits warmer nights rather than winter.
The Takeaway
The cover gets all the attention, but the fill is what you actually feel all night. Choose based on how you sleep and how much care you want to put in — feather down for a light, moulded warmth that rewards a bit of upkeep, microfibre for consistent comfort that's easy to maintain.
