Sleep Well For Less - Last Chance
A super king size duvet measures 260 x 220cm - noticeably wider and longer than a king size duvet, and sized to give generous overhang on a 180cm-wide mattress. Getting the size right matters: a king size duvet on a super king bed will leave both sleepers short of coverage overnight. Our super king duvet range covers synthetic, feather and down, goose down, and hybrid fills across tog ratings from 4.5 to 13.5 and including all seasons options, with guarantees up to 3 years. Free delivery on orders over £100 and expert advice seven days a week.
Browse the full super king duvet range below, or speak to our team for advice on fill type and tog rating. We are available seven days a week on 01928 242829.
A super king bed is the largest standard UK sleeping surface - 180cm wide and 200cm long. The duvet needs to be proportionately larger to cover it properly. A super king duvet at 260 x 220cm provides substantial overhang on both sides, keeping two sleepers covered without one pulling the duvet to their side overnight.
The most common mistake with super king bedding is ordering a king size duvet instead. A king size duvet is 225 x 220cm. On a 180cm-wide super king mattress, that leaves just 22cm of overhang on each side - tight for one person, and not enough for two. Always order a duvet sized specifically for a super king bed.
Beyond getting the size right, the super king range offers a genuine choice between fill types and price tiers. At one end are accessible synthetic and hybrid options with modern temperature management technology. At the other end are premium natural fills - duck feather and down, and Hungarian goose down from specialist bedding brands - which represent a different product category entirely: warmer for their weight, more breathable, and longer lasting with proper care.
For a full guide to choosing between tog ratings and fill types, read our buying guide: Duvet Buying Guide.
| Factor | Why It Matters | What to Check |
|---|---|---|
| Size | A super king duvet must be 260 x 220cm. A king size duvet is significantly smaller and will not cover a super king mattress adequately for two sleepers. | Confirm the duvet dimensions on the individual product listing before ordering. Do not assume a duvet marketed as large or oversized is super king size. |
| Tog rating | Determines how warm the duvet is. The right tog depends on how warm you sleep, the room temperature, and the season. | Choose based on your sleep temperature, not convention. Hot sleepers often find 10.5 tog too warm year-round. |
| Fill type | Determines breathability, weight, how the duvet handles temperature regulation, and how long it lasts. Natural fills behave differently from synthetic and are worth understanding before choosing. | Match the fill to your sleep priorities - temperature regulation, weight, allergy requirements, or budget. |
Not sure which is right? Speak to our team on 01928 242829.
| Size | Duvet Dimensions | Mattress Dimensions |
|---|---|---|
| Super King | 260 x 220cm | 180 x 200cm mattress |
A 260 x 220cm duvet gives approximately 40cm of overhang on each side of a 180cm-wide super king mattress. Always confirm the duvet dimensions on the individual listing - some products vary slightly from this standard.
| Fill | How It Performs | Best For |
|---|---|---|
| Synthetic / microfibre | Machine washable. Consistent warmth. Does not breathe as naturally as down. Modern synthetic fills use cooling technology and phase-change materials to manage temperature more actively. Hypoallergenic. | Allergy sufferers, those wanting easy care, those preferring a consistent feel year-round |
| Hybrid | Combines materials - typically a synthetic structure with natural or specialist fill - to balance breathability, weight, and temperature management. Often includes cooling technology in the cover. | Those wanting a performance-focused duvet with better temperature management than standard synthetic |
| Duck feather and down | Warmer for its weight than synthetic. More breathable. The down clusters trap warmth while allowing moisture to escape. Softer and lighter than pure feather. Requires careful washing or dry cleaning. | Those wanting a natural fill at a more accessible price than goose down. Warm, soft, and breathable. |
| Goose down | The premium natural fill. Hungarian goose down produces larger, higher-loft clusters than duck down, which means more warmth with less weight and better breathability. Exceptional longevity with proper care. | Those wanting the finest natural sleeping experience, those investing in a duvet for the long term, those pairing with a premium super king mattress |
| Tog | Warmth Level | Best For |
|---|---|---|
| 4.5 tog | Light - summer weight | Hot sleepers year-round, summer months in warmer bedrooms |
| 10.5 tog | Medium - all-round weight | Most bedrooms year-round in a centrally heated UK home |
| 13.5 tog | Warm - winter weight | Cold sleepers, poorly heated rooms, winter months |
| All seasons | Two duvets in one - typically a light and a medium that clip together | Those wanting flexibility across seasons without buying two separate duvets |
For a super king bed shared by two people, it is worth noting that individual temperature preferences often differ. An all seasons set can be useful as the lighter duvet provides summer sleeping and the heavier one winter sleeping without compromise.
The super king range includes premium natural down options that represent a different category of product from synthetic alternatives. Here is what distinguishes them.
| Feature | Natural Down | Synthetic |
|---|---|---|
| Weight for warmth | Lighter - down clusters trap warmth efficiently without bulk | Heavier for equivalent warmth |
| Breathability | High - moisture escapes naturally through the down clusters | Lower - can retain heat and humidity more |
| Feel | Softer, more luxurious drape | More consistent, less variable |
| Care | Usually requires careful machine washing or professional cleaning | Usually machine washable |
| Longevity | Can last many years with proper care | Typically shorter lifespan |
A premium natural down duvet is a long-term investment rather than a consumable product. Pair it with a duvet cover that breathes well and care for it according to the label instructions.
| Item | Included? |
|---|---|
| Duvet | Yes - always |
| Care guide | Yes - always included |
| Guarantee | Yes - 1 to 3 years depending on brand. Check individual listing. |
| Duvet cover | No - sold separately. Browse our duvet cover sets. |
| Pillowcases | No - sold separately. Browse our pillowcases. |
Always check the individual product listing for exact dimensions, fill details, care instructions, and guarantee terms before purchasing.
| What We Offer | Why It Matters to You |
|---|---|
| 50+ years of expertise | Honest advice on tog rating, fill type, and whether a natural down option suits your priorities and budget |
| Synthetic, hybrid, feather and down, and goose down options | The full range from practical everyday choices to premium natural options in super king size |
| Cooling and all seasons options | Practical solutions for couples with different temperature preferences in a super king bed |
| Free UK delivery on orders over £100 | No hidden delivery charges on the vast majority of orders. Some remote postcodes may incur a surcharge - see our delivery page for details. |
| Price Promise Guarantee | We'll match any like-for-like price you find elsewhere |
| Interest-free finance available | Spread the cost on eligible orders - see our finance page for terms |
| Expert advice, 7 days a week | Real people via phone, chat, or in-store - no scripts, no pressure |
| Rated Excellent on Trustpilot | Real feedback from verified customers across thousands of orders |
Not sure whether synthetic, feather and down, or goose down suits your super king bed and sleeping preferences? Our team can help. Chat online, call us, or visit our showrooms in Cheshire and Greater Manchester. We're open seven days a week.
| How to Reach Us | What to Expect |
|---|---|
| Live chat | Fast responses for quick questions. Available during opening hours. |
| Phone - 01928 242829 | Speak directly with a sleep expert. Best for matching tog rating and fill type to your sleep temperature and priorities. |
| In-store (Cheshire / Greater Manchester) | See and feel duvet options in person. See our store locations. |
| Help Centre | Buying guides and FAQs available 24/7. Visit our help and advice section. |
| Question | Answer |
|---|---|
| What size is a super king duvet? | A standard super king duvet measures 260 x 220cm. This is designed to fit a super king mattress measuring 180 x 200cm, giving approximately 40cm of overhang on each side. Always confirm the exact dimensions on the individual product listing before ordering. |
| Can I use a king size duvet on a super king bed? | No. A king size duvet measures 225 x 220cm. On a 180cm-wide super king mattress, this gives only around 22cm of overhang on each side - insufficient for two sleepers overnight. A duvet sized specifically for a super king bed is needed. |
| What tog super king duvet should I choose? | For year-round use in a centrally heated UK home, 10.5 tog suits most people. For hot sleepers, 4.5 or a cooling option works better. For those who feel cold, 13.5 tog provides more warmth. An all seasons duvet gives two separate duvets that can be used alone or combined, offering flexibility across the year. |
| What is the difference between duck down and goose down? | Goose down produces larger, higher-loft clusters than duck down. Larger clusters trap warmth more efficiently while allowing more airflow, which means a goose down duvet is typically lighter for its warmth, more breathable, and longer lasting than duck down at an equivalent weight. Hungarian goose down is considered one of the finest natural fill options available. The difference is real but comes at a significant price premium. |
| Is a natural down duvet worth it for a super king bed? | For those investing in a premium super king mattress and bed, a natural down duvet completes the sleep setup with a fill that breathes better, feels lighter, and lasts longer than synthetic alternatives. With proper care, a quality goose down duvet can outlast several synthetic alternatives. Whether the investment is worthwhile depends on budget and priorities. Our team can help you weigh it up. |
| Are super king duvets suitable for allergy sufferers? | The synthetic and hybrid options in the range are hypoallergenic and suitable for allergy sufferers. Natural down options are not hypoallergenic. Check the individual product listing for allergy suitability before ordering. |
| Do you offer free delivery on super king duvets? | Yes, free UK delivery is included on orders over £100, which covers all super king duvets in our range. Delivery times vary by brand - from next day on some models to 3 to 4 weeks on premium natural options. Check the individual listing. Some remote postcodes may incur an additional charge. See our delivery page for full details. |
| Can I buy a super king duvet on finance? | Yes. Interest-free finance is available on eligible orders. See our finance page for full details on terms, eligibility, and how to apply. |
