Thin mattresses measure up to 19cm in depth, making them the practical choice for bunk beds, guest beds, day beds, and any bed where a standard depth mattress won't fit or isn't needed. At Land of Beds, we've been helping people find the right mattress for over 50 years, and our thin mattress range covers foam, memory foam, pocket sprung, and hybrid constructions across Single, Small Double, Double, King Size, and Super King sizes. Prices start from £129, so there's a genuine choice at every budget. Extra depth isn't always the right answer, for a bunk bed, guest room, or occasional-use bed, a well-made thin mattress can outperform a bulkier one that doesn't suit the frame.
Browse our thin mattresses below, or speak to our team about the right depth and construction for your bed, seven days a week.
A thinner mattress isn't a compromise, it's often the right specification for the job. Bunk beds, day beds, and guest rooms are usually built around a shallower base, and fitting a deep mattress on top can affect stability, look, and safety rails on bunk frames. At Land of Beds, we've spent over 50 years helping people match the right mattress to the bed it's actually going on, not just the biggest one available.
Three things determine whether a thin mattress is right for your bed and how you use it. Get these right and the rest, such as tension and budget, is easier to decide.
| Factor | Why It Matters | What to Check |
|---|---|---|
| Depth and frame fit | Bunk beds, day beds, and some guest beds have side rails or a fixed base height. An overly deep mattress can sit above the rail or unbalance the frame. | Maximum mattress depth stated on your bed frame, side rail height on bunk beds |
| Construction | Foam, memory foam, pocket sprung, and hybrid options all perform differently at a shallower depth. Support and comfort still come down to build quality, not just the depth. | Filling type, spring count where applicable, firmness rating |
| Intended use | A mattress for occasional guest use has different requirements to one for a child's everyday bed or a permanent bunk. | Frequency of use, who will be sleeping on it, whether the guarantee reflects daily use |
Not sure where to start? Speak to our team or use the quick decision guide further down this page.
Thin mattresses are available across the sizes below. Your mattress size must match your bed frame or bunk exactly.
| Size | Mattress Dimensions | Best For |
|---|---|---|
| Single (3ft) | 90 x 190cm | Bunk beds, children's beds, guest rooms |
| Small Double (4ft) | 120 x 190cm | Compact guest rooms, day beds |
| Double (4ft 6) | 135 x 190cm | Guest rooms, sofa beds, occasional use |
| King Size (5ft) | 150 x 200cm | Guest rooms needing more width |
| Super King (6ft) | 180 x 200cm | Guest rooms needing maximum width at a shallow depth |
If you're buying for a bunk bed, always check the maximum mattress depth stated by the frame manufacturer before ordering. This varies between individual bunk bed models, so there's no single figure that applies across all frames.
See our Mattress Buying Guide for more on choosing the right size and feel.
The construction of a thin mattress affects how supportive and comfortable it feels, even at a shallower depth. Here's a plain comparison of every type we stock in this range.
| Type | Key Features | Best For |
|---|---|---|
| Foam | Single-layer or reflex foam base, lightweight, straightforward construction | Budget-conscious buyers, occasional use, guest beds |
| Memory Foam | Foam base with a memory foam comfort layer, contours to the body, absorbs movement | Everyday use, side sleepers, pressure relief |
| Pocket Sprung | Individually wrapped springs even at a shallow depth, responsive support, good airflow | Buyers wanting a more traditional, supportive feel |
| Hybrid | Combines pocket springs with a memory foam comfort layer | Everyday bunk or guest use where support and comfort both matter |
Choose a Foam mattress if:
Choose a Memory Foam mattress if:
Choose a Pocket Sprung mattress if:
Choose a Hybrid mattress if:
In our showrooms, most customers buying a thin mattress for a bunk bed or child's bed choose memory foam or hybrid over plain foam. Even though foam is the cheaper option, comfort for everyday use tends to matter more once the decision is in front of them.
Not every bed needs a mattress 20cm or deeper to perform well. Here's a plain comparison.
| Thin Mattresses (up to 19cm) | Standard Depth Mattresses | |
|---|---|---|
| Feel | Firmer underfoot, less give in the comfort layer | Deeper comfort layers, softer feel available |
| Bed frame and bedding fit | Fits bunk beds, day beds, and shallow frames without overhang | May not suit bunk beds or frames with a low side rail |
| Weight | Lighter, easier to lift and turn | Often heavier, may need help to move |
| Best for | Bunk beds, guest rooms, day beds, occasional or child use | Main bedrooms, everyday use where depth of comfort matters most |
Neither is better in general, it depends on the bed frame and how the mattress will be used. Read our Mattress Buying Guide if you'd like guidance before deciding.
Your budget will influence the construction, comfort layer, and guarantee length available at this depth.
| Budget | What You Get | Best For |
|---|---|---|
| Under £200 | Foam-based construction, basic build, functional support for occasional use | Guest rooms, short-term or infrequent use |
| £200 - £299 | Memory foam or pocket sprung options, improved comfort layers and support | Bunk beds and children's beds used nightly, guest rooms used more often |
| £300+ | Hybrid constructions combining springs and memory foam, higher spec builds | Everyday use where support and comfort both matter |
A higher-spec thin mattress often makes more difference on a bunk bed or child's bed than people expect, since it's likely to be used every night rather than occasionally.
Mike Murray, Land of Beds CEO: "A mattress on a bunk bed still gets used every night, it just gets underestimated because of its size. Spending a little more on the construction, not just the depth, pays off."
Looking for a quality thin mattress at a lower price? We have options starting from £129, with regular sales across selected models. Browse our affordable thin mattresses to see what's available at your budget.
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.
Inclusion varies by product. As a general guide across our thin 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 frames 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 thin mattresses | Choice across foam, memory foam, pocket sprung, 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 thin mattress often comes down to the bed it's going on rather than the mattress alone, and our team is used to talking this through 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 depth and frame fit. |
| In-store (Cheshire / Greater Manchester) | Try thin mattresses in person before you buy. |
| Help Centre | Buying guides, size guides, and FAQs available 24/7. |
| Question | Answer |
|---|---|
| What's the best thin mattress to buy? | It depends on how the bed will be used. For occasional guest use, a foam mattress is usually enough. For a bunk bed or children's bed used every night, memory foam, pocket sprung, or hybrid options tend to hold up better and feel more comfortable over time. |
| What size mattress do I need for a bunk bed? | Most bunk beds use a Single mattress at 90 x 190cm, but always check the specific dimensions for your frame before ordering, as this can vary between models. |
| Are thin mattresses less comfortable than deeper mattresses? | Not necessarily. Comfort depends more on the construction and filling quality than the overall depth. A well-made memory foam or hybrid mattress at this depth can still offer good support and pressure relief. |
| How thick can a mattress be for a bunk bed? | This varies by individual bunk bed frame, there's no standard maximum depth across all models. Always check the manufacturer's guidance for your specific frame before ordering. |
| Does a thin mattress require assembly? | No, mattresses don't require assembly. Old mattress removal isn't included on most models in this range, so check the individual listing or contact our team to confirm before you buy. |
| Do you offer free delivery on thin mattresses? | Yes, free UK delivery on qualifying orders. Lead times vary by model, check the individual product listing to confirm. |
| Can I buy a thin mattress on finance? | Yes, finance is available on eligible orders. See our finance page for terms and how to apply. |
| What mattress types are available up to 19cm in depth? | Foam, memory foam, pocket sprung, and hybrid constructions are all available at this depth. Use the quick decision guide above to find your starting point. |
| How long should a thin mattress last? | This varies by construction and guarantee. Entry-level foam options typically carry shorter guarantees, while memory foam, pocket sprung, and hybrid models can carry guarantees of up to 10 years. Check the individual listing to confirm. |
| Is a thin mattress suitable for everyday use, or only for occasional guests? | It can be used daily, it depends on the construction. Memory foam, pocket sprung, and hybrid mattresses are built for regular use, while basic foam options are better suited to occasional guest use. |
