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A question that crops up regularly on Reddit's sleep and bedding communities goes something like this: "I run really hot at night — I've tried everything but I still wake up overheated. Would a silk duvet help, and what tog should I go for?"
It's a great question, and the honest answer is: yes, silk can genuinely help — but the tog you choose matters just as much as the filling. Here's everything you need to know.
Tog is simply a measure of how well a duvet traps warmth. The higher the number, the more heat it holds in. A 2–4.5 tog duvet lets heat escape easily, keeping you cooler. A 9–13.5 tog duvet keeps heat in, making it suitable for cold rooms or cold sleepers. Think of it like the difference between a thin linen shirt and a chunky knit jumper — same fabric concept, very different warmth levels.
Most high street duvets in the UK sit at 10.5 tog as a year-round compromise. For hot sleepers, that's often far too warm — even in winter.
Silk's superpower isn't just warmth — it's temperature regulation. Unlike synthetic fillings or even down, mulberry silk naturally wicks moisture away from your body and adapts to your temperature rather than just insulating. This means a silk duvet at 6–9 tog can feel significantly less stifling than a synthetic duvet at the same rating.
That said, if you genuinely overheat at night, you still want to start at the lighter end of the scale.
Silkweb offers silk duvets in two weights across two different product lines. Here's how they compare:
This is the lightest option in both ranges. It's designed for warm summer nights, but for confirmed hot sleepers it works brilliantly year-round — especially if your bedroom stays above 18°C even in winter thanks to central heating.
This is the most versatile option. It's light enough that many hot sleepers use it year-round in a centrally heated UK home, and warm enough for cooler nights. Silkweb also sells both the Summer and All Seasons duvets with a button-and-loop system, so you can clip them together in winter for extra warmth without buying a separate winter duvet.
Silkweb offers the same two tog weights across two different casings:
The flagship range. The duvet is filled with long-fibre mulberry silk floss and encased in a luxuriously lightweight silk satin outer. Spiral stitching holds the silk in place and optimises thermal performance. The silk satin casing adds a gentle silkiness against any duvet cover. Available in Summer (2–4.5 tog) and All Seasons/Autumn (6–9 tog).
The same AAA Grade long-fibre mulberry silk filling, but housed in a 300 thread count breathable cotton sateen outer. This is a great option if you prefer the feel of cotton against a duvet cover, or if you find the silk casing too slippery on your existing bedding. Also available in Summer (2–4.5 tog equivalent) and All Seasons/Autumn (6–9 tog equivalent). Both ranges are OEKO-Tex Standard 100 certified.
| Tog weight | Silk Satin Cased | Cotton Cased | Best for |
|---|---|---|---|
| Summer — 2 to 4.5 tog | ✓ Available | ✓ Available | Hot sleepers, warm rooms, summer use |
| All Seasons — 6 to 9 tog | ✓ Available | ✓ Available | Year-round use in a heated UK home |
Not sure which tog to go for? Work through these:
1. How warm is your bedroom at night?
If your room stays above 18°C most of the year (common in centrally heated UK homes), start with the Summer 2–4.5 tog. If it dips below 16°C in winter, the All Seasons 6–9 tog gives you more flexibility.
2. Are you a confirmed hot sleeper, or just warm in summer?
If you sweat or overheat every night regardless of season, the Summer weight is likely your answer. If it's mainly a summer problem, the All Seasons tog may be all you need — silk's temperature-regulating properties do a lot of the heavy lifting.
3. Do you and your partner have different warmth preferences?
This is one of the most common duvet dilemmas. The simplest solution is two separate single duvets rather than one shared double — each person chooses their own tog. A hot sleeper can have the Summer 2–4.5 tog while a cold sleeper uses the All Seasons 6–9 tog. No more duvet wars.
For most hot sleepers in the UK, the Summer 2–4.5 tog silk duvet is the starting point — whether you opt for the silk satin cased or cotton cased version. If your bedroom cools down significantly in winter, the All Seasons 6–9 tog gives you more year-round versatility — and you can always add the Summer duvet as a lightweight layer in colder months using the button-and-loop system on the silk satin range.
Either way, the natural temperature-regulating properties of mulberry silk mean you're already a step ahead of most synthetic alternatives — even before you've chosen your tog.
