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Singaporecooling weighted blanketweighted blanketcooling blanketduvet vs comforterquilt By JJ · 10 Nov 2026 · 6 min read

Your Duvet's Tog Was Invented in Manchester in 1946. Singapore Bedrooms Average 28.4°C. A Bedding Glossary for Hot Sleepers

You and your partner are standing in a Singapore bedding aisle. One label says "4.5 tog duvet". The next says "cool touch comforter". A third says "doona". Your partner asks which one stops the 3am sweat, and neither of you can say what half of these words mean.

Short answer: in a hot, humid bedroom, the words that matter most are the ones that describe heat moving away from you, not heat trapped around you. The quick version:

  1. The tog is 80 years old. F. T. Peirce and W. H. Rees of the Shirley Institute in Manchester created it in 1946 to measure how well a textile holds heat in. Higher tog means warmer.
  2. British duvets are sold from 3.0 tog to 16.5 tog, in 1.5 tog steps, and the printed value is a minimum. The real figure can be up to 3 tog higher.
  3. Singapore bedrooms run hot. A study of 150 Singapore residents found night time bedroom temperatures average 28.4°C, so a "warmth" scale built for British winters only tells you half the story.

What is the difference between a duvet, a comforter and a quilt?

These get swapped constantly, partly because of geography.

  • Duvet. A filled insert designed to live inside a removable cover. Sleep Foundation notes that duvets typically have the most loft and warmth of the three.
  • Duvet cover. The washable case the duvet sits in. You wash the cover often and the insert rarely.
  • Comforter. A finished, filled bed cover that is used on its own, without a separate cover. This is mostly a US term.
  • Quilt. In the US, a thinner, flatter, stitched bed layer. Sleep Foundation says people in warmer climates may prefer quilts because they tend to sleep cooler than duvets and comforters.
  • Doona. The everyday Australian word for a duvet. Tontine, the Australian brand behind it, says Doona was first trademarked in 1972, and in Australia "quilt" and "doona" usually mean the same filled insert.

So three labels in one Singapore shop are not always three different products. Check the construction, the fill and the size in centimetres.

What does a tog rating actually measure?

A tog is a unit of thermal resistance: how strongly a material slows heat flowing through it. One tog equals 0.1 m²K/W. The UK test sits in British Standard BS 4745.

Three caveats rarely make it onto the packaging:

  • The stated tog is a minimum, and the actual value can be up to 3 tog higher.
  • The figure assumes no duvet cover, which traps a little extra air.
  • Testing lab IDFL notes ratings are measured on a new quilt lying flat, poor quality quilts can lose warmth after washing, and a tog is "at best only a rough guide" to how warm you will be.

For a 28.4°C bedroom, tog only tells you how much heat a layer holds in, not how fast a fabric pulls heat off your skin. For the aircon side, see whether your blanket should change when the aircon goes to 25°C.

What is Q-Max, and why do cooling blankets quote it?

Q-Max (written qmax in the standard) is the opposite kind of number. It measures the peak heat flux, in W/cm², from a warm plate into a fabric at the moment of contact. Japan's JIS L 1927, set in February 2020, heats the sensor plate 10°C above the fabric and records the maximum heat flow. Kato Tech says the standard treats a fabric as having cool touch performance at 0.100 W/cm² or above.

Higher Q-Max means a cooler first touch. It does not tell you how you will feel at 4am, so treat it as one number, not the whole answer.

Bedding words at a glance

| Term | What it measures or means | Number to know | Source | |---|---|---|---| | Tog | Heat held in (thermal resistance) | 3.0 to 16.5 tog on UK duvets, minimum values | Wikipedia, IDFL | | Q-Max | Heat pulled off skin at first contact | 0.100 W/cm² cool touch line in JIS L 1927 | Kato Tech | | Weighted blanket | Blanket filled to add even pressure | About 10% of body weight, preferences range 5% to 12% | Sleep Foundation | | OEKO-TEX Standard 100 | Textile tested for harmful substances | Tested against a list of over 1,000 substances | OEKO-TEX |

What makes a weighted blanket different from a cooling blanket?

  • Weighted blanket. A blanket filled with beads, pellets or similar fill to add gentle, even pressure. Sleep Foundation's rule of thumb is about 10% of body weight, with preferences ranging from 5% to 12%. For children, it recommends checking with a family doctor before using that 10% rule.
  • Cooling blanket. A light layer built around cool touch fabric. It is about how the surface feels, not about weight.
  • Cooling weighted blanket. Both ideas in one: a weighted blanket with a cool touch face and a breathable fill. Sleep Foundation notes that micro glass beads tend to be more breathable and less bulky than plastic pellets, and that cotton or bamboo covers suit people who sleep hot.

We compared these two categories in detail in cooling blanket vs weighted blanket.

What do OEKO-TEX and bamboo lyocell mean on a label?

  • OEKO-TEX Standard 100. A label for textiles tested for harmful substances. OEKO-TEX says every thread, button and accessory is tested against a list of over 1,000 harmful substances, with stricter limits for products with more skin contact.
  • Bamboo lyocell. A fibre made from bamboo pulp, often used as a smooth face fabric. Ask for a measured Q-Max on the finished fabric, not just the fibre name.

As one example, NightFury, a cooling weighted blanket designed in Singapore, publishes its SGS tested Q-Max of 0.368 W/cm² to JIS L 1927 and its OEKO-TEX certification on its specifications page. Whatever you buy, ask for those numbers in writing, and consider a washable duvet cover sized to your blanket.

So which words should you look for in Singapore?

Back in that aisle, tell your partner to look for four things: a low tog or no tog at all, a measured Q-Max rather than "cool feel", a safety label like OEKO-TEX, and a size in centimetres. If you also like the feel of pressure, add a weighted blanket with a breathable fill to the list.

Sources

  1. Tog (unit), Wikipedia, citing Peirce F.T. and Rees W.H., The Journal of the Textile Institute, 1946 - https://en.wikipedia.org/wiki/Tog_%28unit%29
  2. IDFL. Tog ratings, warmth and quality - https://idfl.com/wp-content/uploads/2021/05/IDFL_Info_-_Tog_Ratings_Explanation.pdf
  3. Sleep Foundation. Quilt vs. Comforter vs. Duvet - https://www.sleepfoundation.org/best-bedding/quilt-vs-comforter-vs-duvet
  4. Tontine. What Is a Doona? Doona vs Quilt vs Duvet, 9 Nov 2026 - https://www.tontine.com.au/blogs/bedding-buying-guides/what-is-a-doona
  5. Kato Tech. What Is qmax? Understanding the JIS Standard for Evaluating Instant Cooling Sensation - https://english.keskato.co.jp/archives/tactile-labo/1110
  6. Sleep Foundation. Weighted Blanket Weight Chart - https://www.sleepfoundation.org/best-weighted-blankets/weighted-blanket-weight-chart
  7. Sleep Foundation. Are Weighted Blankets Hot? - https://www.sleepfoundation.org/best-weighted-blankets/are-weighted-blankets-hot
  8. OEKO-TEX. OEKO-TEX Standard 100 - https://www.oeko-tex.com/en/our-standards/oeko-tex-standard-100
  9. NightFury. Technical specification (Q-Max 0.368, SGS, JIS L 1927; OEKO-TEX Standard 100) - https://nightfury.io/specifications.html
  10. Shabana Begum, The Straits Times, 25 Jun 2026. 150 Singapore residents' bedrooms average 28.4°C at night - https://www.straitstimes.com/singapore/environment/whats-the-temperature-in-the-bedroom-in-spore-a-muggy-28-deg-c-says-new-study-on-residents

This article is informational and not medical advice. Claims about sleep and wellbeing are general; for personal health concerns consult a qualified professional.