Best 4.5 Tog Duvet 2026: 10 Ranked, and Why 'Heavyweight' Means 4.5 Tog

This tops the ranking on volume, not on a slogan. 25,304 ratings average 4.6, and 77% of them are five-star, with just 1% at one star. At £16.99 for a double it also undercuts most of the field, including the Siebenschläfer double at £23.95 and the Silentnight Summer Breeze at £24.99. That combination of sample size and price is why this 4.5 tog duvet leads.

The engineering here is about fibres rather than filling weight. Silentnight says its anti-allergy fibres are approved by the British Allergy Foundation and that the filling is effective against 99.9% of bacteria; the cover is microfibre and the whole thing is machine washable. Crucially, it carries a 5-year manufacturer's guarantee and is made in the UK — the longest guarantee here, against the 2-year cover on both Slumberdown models.

That said, the spec table is a mess. It lists 'Camping' both as the recommended use and as the sport type, for a double bed duvet. It gives no filling weight and no dimensions of its own. Worth noting too: the warmth field says only 'Lightweight', which tells you less than the tog rating does. If you need a winter duvet or a king size, look elsewhere.

A 4.8 average from 19,531 ratings is the highest score here, and 86% of those ratings are five-star — ten points clear of the Slumberdown Summer Nights at 76%. It ranks 13th in Amazon's Duvets category. At £23.95 for a double it is about £7 more than the Silentnight Anti Allergy, so you are paying for the score and the OEKO-TEX testing, not for a bigger fill.

The practical selling point is the wash. The listing says the summer duvet 4.5 tog is washable at 95°C, far above the 40°C most of these listings specify, and high temperatures are the usual way to deal with dust mites and sweat. In theory that is a real hygiene advantage for allergy sufferers. Meanwhile the filling is microfibre and the duvet is OEKO-TEX tested for harmful substances.

The catch is the spec table. The fabric type field contains an email address, 'Gpsr@dejo-commerce.com', which tells you nothing about the fabric. The brand is spelled 'Siebenschläfer' in the title and 'Siebschläfer' in a bullet. There is no fill weight and no fill quantity anywhere, and the country of origin is Estonia. If a precise fibre breakdown matters to you, this listing will not give you one.

9,737 ratings average 4.6, with 76% five-star and 2% one-star. It sits £1 above the Silentnight Anti Allergy double and £5.96 below the Siebenschläfer. However, what separates it is disclosure: Slumberdown states the size as 200 x 200 cm and the thickness as 2 cm, two numbers most listings here leave out entirely.

The listing calls it a 4.5 tog duvet double, filled with non-allergenic hollowfibre and moisture-wicking fibres meant to move air rather than trap it. It is machine washable at 40°C and tumble dryer friendly, made in the UK, and covered by a 2-year quality guarantee. In practice that is a straightforward summer quilt: thin, washable and sized for a standard double bed.

Even so, the disclosure stops short of the filling. There is no weight in grams, so the 2 cm thickness is the only build figure you get. The listing also carries a 'Packaging may vary' line, which is boilerplate rather than a product detail. If you have a king or single bed, this exact listing is not for you.

12,201 ratings average 4.6, with 76% five-star and 1% one-star, so the score is solid. The price is the problem: at £24.99 it is the most expensive item in this ranking, £8 above Silentnight's own Anti Allergy double at £16.99 and £1.04 above the Siebenschläfer. The listing gives no filling weight to explain that.

The design brief is breathability. Silentnight describes moisture-wicking covers and lightweight fibres that let heat and humidity escape, aimed at over-heaters. It is hypoallergenic and machine washable. By contrast with the Anti Allergy model, the listing states no Allergy UK approval and no guarantee length at all.

Worth noting what the spec table does with the tog rating: it puts '4.5 Tog' in the pattern field, the colour field and the style name, and lists sport type as 'No'. There are no dimensions and no fill weight. If you want a lightweight summer duvet with a stated size, the Slumberdown Summer Nights is £7 cheaper and gives you 200 x 200 cm; if you want the Silentnight name, the Anti Allergy double is cheaper still.

4,309 ratings average 4.6, with 74% five-star and 2% one-star. As a 4.5 tog king size duvet at 225 x 220 cm it is £5.64 cheaper than the Good Nite king at £24.59 and £5.20 cheaper than the Linens Limited Bedtime Bliss king at £24.15. That is the main reason it sits above both.

Slumberdown's pitch is temperature regulation: 'breathable temperate fibres' meant to stop overheating. It is non-allergenic hollowfibre, machine washable at 40°C, tumble dryer friendly, made in the UK and covered for 2 years. At the same time, the 225 x 220 cm measurement is the only size figure in the listing — no thickness, no fill weight.

That said, 'Climate Control' is doing marketing work the specs do not back up. There is no stated cooling technology beyond the fibre description, and no filling weight to set against the Good Nite's 1.37 kg claim. You are buying a well-reviewed, well-priced king with a normal hollowfibre fill.

At £16.21 this is the cheapest item in the ranking — £0.78 below the Silentnight Anti Allergy double and £8.78 below the Silentnight Summer Breeze. The trade-off shows in the ratings: 4.3 from 3,677 reviews, with 65% five-star, the lowest five-star share here, and 8% at two stars or below.

The build differs from the microfibre duvets around it. Linens Limited uses a polypropylene cover with a hollowfibre filling, marketed as anti-allergy and aimed at allergy sufferers. It is machine washable at 40°C and also hand washable, and the listing says it is tested to UK, European and global standards. Meanwhile the warmth field is filled in as '4.5 Tog' rather than a description of warmth, so it adds nothing.

In short, this is a budget buy and the numbers say so. If price is the deciding factor and 65% five-star is acceptable to you, it does the job as a 4.5 tog quilt double. If you want the highest confidence, the Silentnight Anti Allergy has 25,304 ratings at 4.6 for £0.78 more.

6,853 ratings average 4.4, with 71% five-star and 5% one-star. It is a single 4.5 tog duvet measuring 135 x 200 cm, at £17.99 — the same price as the Slumberdown Summer Nights double, which is worth noting if you buy by size rather than by tog.

The construction is box-stitched with corner piping on four sides, which the listing says keeps the hollowfibre filling evenly distributed instead of drifting to the bottom. The cover is soft-touch microfibre, it is hypoallergenic and machine washable at 40°C, and the range comes in 1.5, 2.5 and 4.5 tog. As a result it is the most flexible size range here — single, double, king and super king.

However, this is the listing that proves the point about tog ratings. The same product is a cool summer quilt 4.5 tog on one line and 'Heavyweight' in the fabric warmth description on another. It also lists 'Single' in the pattern field. The catch for buyers: no fill weight and no tog explanation, so you are trusting the number rather than a measurement.

Only 227 ratings, averaging 4.4, with 71% five-star and 7% one-star — the smallest sample in the top ten and a wider spread than most. At £18.99 it is £1 above the DN Collection single and £2.78 above the Linens Limited Easy Care double.

On paper the spec is decent: OEKO-TEX certified hollowfibre filling, a microfibre stripe cover, hypoallergenic, machine washable at 40°C and tumble dryable on low heat, made in the UK. The title lists the single as 135 x 200 cm. Meanwhile the filling resists dust mites and bacteria according to the listing, which is the usual pitch for a summer quilt.

The catch is the size bullet. It offers 'Single (14.55x200cm), Double (200x200cm), King (24.50x220cm), or Super King (260x220cm)'. Two of those figures cannot be right — 14.55 cm and 24.50 cm are not bed widths, and the listing's own title says 135 x 200 cm, so a digit has gone missing. Either way, 227 ratings is a thin base to buy on, and 7% are one-star.

261 ratings average 4.2, with 60% five-star, 6% two-star and 3% one-star. That is the weakest rating profile in this ranking, and it sits at £24.15 for a king — £5.20 above the Slumberdown Climate Control king at £18.95, which averages 4.6 from 4,309 ratings.

The specification itself is reasonable: ultra-fine siliconised hollowfibre filling, a supersoft polyester/cotton cover, and channel stitching to keep the filling in place. It is machine washable at 40°C and tumble dryable, and made in the UK like the rest of the Linens Limited range. As with the Easy Care, the warmth field is filled in as '4.5 Tog' rather than a description, so the table adds nothing to the rating.

Worth noting the pattern: both Linens Limited entries in this list have the two lowest average scores of the ten, 4.3 and 4.2, and the two lowest five-star shares, 65% and 60%. Neither states a fill weight. If you want a king under £20, the Slumberdown Climate Control is cheaper, better rated and states 225 x 220 cm. That said, if you specifically want the siliconised hollowfibre feel, this is the only one here describing it.