Thick mattresses measure 30cm or more in depth, giving you deeper comfort layers on top of the support system underneath. At Land of Beds, we've been helping people find the right mattress for over 50 years, and our thick mattress range covers memory foam, pocket sprung, natural, latex, gel, and hybrid constructions from small single through to small emperor. Extra depth usually means more room for cushioning layers, but it's the construction underneath that determines whether that translates into genuine comfort and support. A deeper mattress can also affect how your bedding and bed frame fit, so it's worth checking both before you order.
Browse our thick mattresses below, or speak to our team about depth, fit, and finding the right construction for you, seven days a week.
A thicker mattress often signals a more generous comfort layer on top of the support system, which is why so many buyers looking for a plusher, more luxurious feel start their search here. But depth alone doesn't guarantee comfort or durability, the construction underneath matters just as much. At Land of Beds, we've spent over 50 years helping people look past the headline number and choose a mattress that actually performs the way they expect.
Three things determine whether a thick mattress is the right fit for you. Get these right and the rest, tension, filling, budget, is easier to work through.
| Factor | Why It Matters | What to Check |
|---|---|---|
| Depth vs construction | A deep mattress isn't automatically a better one, the spring system and filling quality underneath the comfort layer matter just as much. | Spring count and type, filling materials, not just the depth measurement on its own |
| Bed frame and bedding fit | A thicker mattress can sit higher than your headboard or bed frame sides expect, and standard fitted sheets may not reach around it properly. | Bed frame side height, whether you'll need deep fitted sheets for the extra depth |
| Firmness and filling | Memory foam, pocket sprung, natural, gel, and hybrid constructions all feel different even at the same depth. | Tension, filling type, and how each performs for your sleep position |
Not sure where to start? Speak to our team or use the quick decision guide further down this page.
Your thick mattress must match your bed frame or divan base exactly, regardless of depth. Use this table to check the fit.
| Size | Mattress Dimensions | Best For |
|---|---|---|
| Small Single (2ft 6) | 75 x 190cm | Children, teens, solo adults, compact rooms |
| Single (3ft) | 90 x 190cm | Children, teens, solo adults, guest rooms |
| Small Double (4ft) | 120 x 190cm | Solo sleepers wanting more room, compact couples |
| Double (4ft 6) | 135 x 190cm | Couples in smaller bedrooms, guest rooms |
| King Size (5ft) | 150 x 200cm | Couples wanting more width and length |
| Super King (6ft) | 180 x 200cm | Maximum comfort, larger master bedrooms |
| Small Emperor (6ft 6) | 200 x 200cm | Maximum space, larger master bedrooms |
This range is available from small single through to small emperor, so whatever your room and bed frame size, there's a thick mattress option to match. Always match your mattress size exactly to your bed frame or divan base. See our Mattress Buying Guide for more on choosing the right size and feel.
The construction of your thick mattress affects how it feels, how it performs, and how long it lasts. Here's a plain comparison of the main types available at 30cm depth and above.
| Type | Key Features | Best For |
|---|---|---|
| Memory Foam | Contours closely to body shape, good pressure relief, absorbs movement well | Side sleepers, pressure relief, couples wanting reduced motion transfer |
| Pocket Sprung | Individually wrapped springs, responsive support, good airflow | Buyers wanting a traditional, supportive feel at depth |
| Natural | Natural fillings such as wool or cotton layered for a soft, breathable sleep surface | Buyers wanting a plush, natural feel |
| Latex | Responsive and breathable, naturally hypoallergenic, durable at depth | Buyers wanting a supportive, slightly springy feel with natural cooling |
| Gel | Memory foam infused with gel for extra cooling on top of close-contouring support | Buyers who like memory foam but tend to sleep hot |
| Hybrid | Combines pocket springs with a foam or memory foam comfort layer | Sleepers wanting support and pressure relief together |
Choose Memory Foam if:
Choose Pocket Sprung if:
Choose Natural if:
Choose Latex if:
Choose Gel if:
Choose Hybrid if:
In our showrooms, we find customers are sometimes surprised that a thinner, well-constructed mattress can outperform a thicker one with a weaker spring system underneath. Depth is a useful starting filter, but it's worth judging the full construction before deciding.
A mattress measuring 30cm or more can change how it sits on your bed frame and how your bedding fits. Here's what to check before you order.
| Consideration | What to Check |
|---|---|
| Bed frame side height | Some bed frames and divan bases have shallow sides designed for slimmer mattresses, a thick mattress may sit higher than expected |
| Fitted sheets | Standard fitted sheets are usually designed for mattresses up to around 30cm, deeper mattresses often need deep fitted sheets to fit properly |
| Headboard height | A thicker mattress raises your sleeping height, so check your headboard still sits at a comfortable height above the mattress surface |
| Weight and handling | Thicker mattresses are often heavier, worth checking if you'll need help moving or rotating it |
See our deep fitted bed sheets if your new mattress needs a better fit than a standard sheet allows.
The material your thick mattress is filled with affects comfort, breathability, and how it performs over time. Here's a plain comparison.
| Material | Performance and Feel | Best For |
|---|---|---|
| Memory Foam | Contours to the body, absorbs movement well, can retain some heat depending on the foam type | Side sleepers, pressure relief, couples |
| Gel Foam | Similar to memory foam with added cooling properties | Buyers who like memory foam but run warm at night |
| Latex | Responsive and breathable, naturally hypoallergenic, durable over time | Allergy sufferers, buyers wanting long-term durability |
| Pocket Springs | Individually wrapped springs, responsive support, good airflow | Buyers wanting a traditional, supportive feel |
| Natural Fillings (wool, cotton) | Breathable and temperature-regulating, softer sleep surface | Buyers wanting a plush, natural feel |
| Hybrid (springs and foam) | Combines the support of springs with a foam comfort layer | Buyers wanting support and pressure relief together |
See our Mattress Buying Guide for more detail on how each filling type performs.
Your budget affects spring count, filling quality, and guarantee length, alongside the depth itself.
| Budget | What You Get | Best For |
|---|---|---|
| Under £500 | Entry-level memory foam and pocket sprung constructions, from £299, shorter guarantees | Guest rooms, first homes, budget-conscious buyers |
| £500-£900 | Higher spring counts, natural, latex, and gel options, longer guarantees | Most main-bedroom buyers, everyday use |
| £900-£2,000 | Premium pocket sprung, hybrid, latex, and natural fibre constructions, longer guarantees | Long-term investment, master bedrooms |
| £2,000+ | The most advanced constructions and finishes available at this depth, the longest guarantees | Buyers prioritising the highest available specification |
Our thick mattress range starts from £299, with options available up to £2,000 and above. Our Price Promise Guarantee means you won't pay more than you should. Finance is available on eligible orders, see our finance page for terms.
Not every mattress needs to be 30cm or more to perform well. Here's a plain comparison.
| Thick Mattresses (30cm+) | Standard Depth Mattresses | |
|---|---|---|
| Feel | Often a deeper comfort layer, can feel more plush | Slimmer profile, feel varies by construction |
| Bed frame and bedding fit | May need deep fitted sheets, check frame side height | Fits most standard frames and sheets without adjustment |
| Weight | Often heavier, may need help to move or rotate | Generally lighter and easier to handle |
| Best for | Buyers wanting a plush, hotel-style feel | Buyers wanting a simpler fit with standard bedding and frames |
Neither is objectively better, it depends on the feel you want and whether your frame and bedding suit the extra depth. Read our Mattress Buying Guide if you'd like guidance before deciding.
Inclusion varies by product. As a general guide across our thick mattress range.
| Item | Typically Included? |
|---|---|
| Mattress | Yes - always |
| Guarantee | Yes - length varies by model, from 1 to 10 years, check the individual listing |
| Free UK delivery | Yes - on qualifying orders |
| Sleep trial | Available on some models, not all - check the individual listing |
| Bed frame or base | No - sold separately, see our bed range |
Always check the individual product listing for full details on what's included before purchasing. This varies between products.
| What We Offer | Why It Matters to You |
|---|---|
| 50+ years of expertise | Deep product knowledge across mattress types and depths |
| A wide range of thick mattresses | Choice across memory foam, pocket sprung, natural, gel, and hybrid constructions |
| Free UK delivery | No delivery charges on qualifying orders |
| Price Promise Guarantee | We'll match any like-for-like price you find elsewhere |
| Finance available | Spread the cost on eligible orders |
| Expert advice, 7 days a week | Real people via phone, chat, or in-store, no scripts, no pressure |
| Family-run, independent retailer | We recommend what's right for you, not what's easiest for us |
| 9,000+ verified Trustpilot reviews | Real feedback from real customers across thousands of orders |
Choosing a thick mattress often comes down to more than the depth number alone, and our team can help you weigh up construction, fit, and feel properly. 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 an expert. Best for detailed advice on construction and fit. |
| In-store (Cheshire / Greater Manchester) | Try thick mattresses in person before you buy. |
| Help Centre | Buying guides, size guides, and FAQs available 24/7. |
| Question | Answer |
|---|---|
| What counts as a thick mattress? | At Land of Beds, thick mattresses are those measuring 30cm or more in depth. This usually means a more generous comfort layer sits on top of the support system underneath. |
| Does a thicker mattress mean better quality? | Not necessarily. Depth is a useful starting filter, but the spring system and filling quality underneath the comfort layer matter just as much for durability and support. |
| Will a thick mattress fit my existing bed frame? | Usually yes, but check the side height of your frame or divan base. Some frames have shallow sides designed for slimmer mattresses, so a thick mattress may sit higher than expected. |
| Do I need special bedding for a thick mattress? | Standard fitted sheets are generally designed for mattresses up to around 30cm. If your mattress sits deeper than that, you may need deep fitted bed sheets for a proper fit. |
| What mattress types are available in 30cm and above? | Memory foam, pocket sprung, natural, latex, gel, and hybrid constructions are all available at this depth. Use the quick decision guide above to find your starting point. |
| How long should a thick mattress last? | This varies by construction and guarantee. Entry-level constructions typically carry shorter guarantees, while premium pocket sprung and natural fibre models can carry guarantees of 10 years or more. Check the individual listing to confirm. |
| Do you offer free delivery on thick mattresses? | Yes, free UK delivery on qualifying orders. Lead times vary by model, check the individual product listing to confirm. |
| Can I buy a thick mattress on finance? | Yes, finance is available on eligible orders. See our finance page for terms and how to apply. |
| Do thick mattresses come with a sleep trial? | Some models include a sleep trial, though not all, so check the individual listing before you order. Our team can also confirm eligibility for a specific model. |
| Are thick mattresses heavier to handle? | Often yes. A deeper comfort layer usually adds weight, so it's worth checking if you'll need help moving or rotating the mattress once delivered. |
