Choosing the Exact Size and Shape for Beds in Your Caravan: The Complete Guide to a Perfect Fit
In this guide, we will walk you through how to measure accurately, decide on shapes, and choose the right mattress style so your caravan bed fits perfectly and feels comfortable night after night.
Key Takeaways
| Question | Answer |
|---|---|
| How do I choose the right bed size for a caravan? | Measure the bed base length and width in centimetres, allow for bedding tuck, and match those to a caravan-specific mattress, for example from our caravan bed mattresses collection. |
| What if my bed has cut outs or curves? | You will need a shaped mattress, such as a left or right cut out or curved corner design, like our Coolplus™ Single Narrow Left Cut Out. |
| Is a rectangular mattress ever enough in a caravan? | Yes, many fixed beds and bunks are simple rectangles, in which case a model such as the Coolplus™ Single Rectangular or Novolatex™ Double Rectangular is ideal. |
| Can I upgrade comfort without changing the shape? | Yes, keep the same dimensions and switch to a higher performing mattress, for example from our standard caravan mattresses range, to improve support and cooling. |
| What if I need a larger bed in a spacious caravan? | Check the available floor space around the bed, then consider larger options such as the Coolplus™ Super King Rectangular or our wider king-size caravan mattresses. |
| Where can I get help with tricky measurements? | You can send us your dimensions or layout and we will advise on the best fit, or contact us directly via our contact page. |
1. Why Getting the Exact Bed Size and Shape Really Matters
In a caravan, every centimetre of your bed area works hard, and an ill-fitting mattress can make the whole space feel cramped, awkward, and uncomfortable. Too large and it can catch on wardrobes or doors, too small and you lose support at the edges or create gaps where pillows and bedding slide away.
Choosing the correct size and shape avoids constant shuffling, protects your support slats or solid base, and allows bedding to fit neatly without bunching. When the mattress follows the bed base precisely, you sleep better, move more easily, and make full use of the layout you paid for.

2. Measuring Your Caravan Bed Base Accurately
Before you think about mattress models, you need accurate measurements of the bed base, not the existing mattress. We always recommend measuring twice along the longest and widest points, using a rigid tape measure in centimetres so you avoid guesswork.
Measure wall to wall or frame to frame, note any changes in width along the length, and mark where corners curve or cut in. If you like tight fitted sheets, you can match the measurements closely, or if you tuck bedding under, reduce each edge by around 1 cm to 2 cm to give yourself room to work.
Width, Length, and Depth: The Essential Trio
For size and shape, width and length are the critical dimensions, but depth still affects comfort and headroom in bunk or overhead spaces. Our Coolplus™ and Novolatex™ mattresses are available in different depths so you can match safety rails and roof clearances without sacrificing support.
When you contact us, sending a quick sketch with your measurements clearly marked helps us confirm if a standard shape will work or whether you need a custom cut. You can also photograph your current bed base from above to show any unusual corners or angles.

3. Understanding Standard Rectangular Caravan Bed Shapes
Many fixed caravan beds and bunks use a straightforward rectangular shape, which is usually the easiest and most cost-effective option. In these cases, you simply match your measured width and length to a standard rectangular mattress, then decide which comfort system suits you best.
Our Coolplus™ Single Rectangular Caravan Mattress and Novolatex™ Single Rectangular Caravan Mattress are typical examples of this simple, accurate fit. They follow the full footprint of a rectangular base, so there are no wasted areas or unsupported sections at the edges.
When a Rectangular Bed Is the Right Choice
If your caravan bed sits between two straight walls with no lockers intruding and the base edges line up square, a rectangular mattress is usually ideal. This also applies to many double fixed beds and wide bunks that do not need curves to follow furniture lines.
The benefit is predictable sizing, simple sheet buying, and an easy upgrade path if you ever decide to move from Novolatex™ to Coolplus™, or vice versa, while keeping the same exact size and shape.

4. Bunk Bed Dimensions and How to Size Them Safely
Bunks are a smart way to increase sleeping capacity, but they add extra safety and clearance considerations. You need the mattress to fit close to the sides so there are no large gaps, while still keeping enough headroom so adults and children can sit up without hitting the ceiling.
We design specific bunk mattresses, such as the Single ReVo™ Cool Gel Bunk Caravan Mattress and Double ReVo™ Cool Gel Caravan Mattress, to make this easier. These follow common bunk footprints while staying within depths that work well with rails and overhead cupboards.
Choosing Between Single and Double Bunk Sizes
Single bunks suit one sleeper and keep weight lower, while double bunks are ideal if you regularly host two people or want more room to move. The key is to match the exact platform size and check any manufacturer guidance on maximum mattress depth for the bunk.
With bunk beds, we recommend measuring the height from slats to ceiling and from slats to any guard rail, then comparing that with the depth options listed on each bunk product page so you maintain safe, usable space.
5. Cut Out Bed Shapes: Left and Right Narrow Designs Explained
Many caravans use narrow beds with a section cut away to allow for a wardrobe, washroom door, or central walkway. In these layouts, a standard rectangle would either block access or leave unused space, so you need a mattress with a precise left or right cut out.
Our Coolplus™ and Novolatex™ ranges include Single Narrow Left Cut Out and Single Narrow Right Cut Out designs that follow these shapes accurately. You choose the side based on where the missing corner sits when you look at the bed from the foot end.
How to Decide if You Need a Left or Right Cut Out
Stand at the foot of the bed, looking towards the headboard, and note which front corner is reduced or missing. If the cut out is on your left, you need a left cut out model, and if it is on your right, you choose a right cut out design.
We always recommend sketching the shape and labelling the head, foot, left, and right, especially if you plan to discuss your order with us by phone or email, so we can double-check everything together.
6. Curved Corner Beds and How to Match Their Shape
Curved corner beds are popular in caravans because they free up floor space and make it easier to move around the bedroom area. The challenge is that standard rectangular mattresses will either overhang the walkway or leave an untidy gap at the foot, which affects both appearance and comfort.
To solve this, we produce mattresses with a left or right curved corner, such as the Coolplus™ Single Narrow Left Curved Corner and Coolplus™ Single Narrow Right Curved Corner models. These follow the exact arc of the base so you keep a smooth edge that lines up with the furniture.
Measuring for Curved Corners
For curved corners, measure the straight sides first, then note how far the curve cuts into the rectangle along both edges. We can work from those measurements to create the correct radius and ensure the curve looks balanced when fitted.
If your existing mattress still has its original factory curve and you are happy with the overall size, you can measure that instead, but always double-check that it aligns exactly with the bed base before you order a replacement.
7. Choosing Between Single, Double, King, and Super King Caravan Beds
Once you know your available footprint and doorway widths, you can decide how generous you want the bed to be. Single and narrow singles are ideal for side beds and bunks, while doubles, kings, and super kings suit central bedrooms and larger tourers or statics.
It is worth balancing sleeping comfort with practical access. A bed that fills the whole space might look generous but can make changing bedding and moving around difficult, so many owners prefer to keep a few centimetres clear on at least one side.
When a Super King Rectangular Mattress Makes Sense
If you own a spacious caravan or static with a large central bed, something like the Coolplus Super King Rectangular Caravan Mattress can give you genuine home-from-home comfort. The rectangular shape makes sheet selection easy, while the generous width suits couples who value extra personal space.
Before ordering a very large mattress, always check that it can be manoeuvred through the caravan door and along any narrow corridors. We can help you plan this and advise on flexible delivery options where needed.

8. Comparing Coolplus™ and Novolatex™ for Different Bed Sizes and Shapes
Once you are confident about the exact size and shape you need, the next choice is comfort system. Both Coolplus™ and Novolatex™ use advanced triple-layer constructions, but they feel slightly different and suit different preferences.
Coolplus™ combines ReVo™ cool gel memory foam with Laytec™ support to keep you cooler in warm caravan environments, while Novolatex™ focuses on latex-like bounce and rapid response with its Laytec™ technology and Cloud™ cover.
| Feature | Coolplus™ | Novolatex™ |
|---|---|---|
| Feel | Cooler, contouring comfort | Spring-like, responsive support |
| Best for | Warm sleepers and summer touring | Those who like a slightly bouncier feel |
| Available shapes | Bunk, rectangular, narrow cut out, curved corner | Bunk, rectangular, narrow cut out |
Whichever you choose, the crucial point is that both systems are available in the precise shapes caravans actually use, from single bunks up to doubles and super kings. That means you never have to compromise on fit just to gain better comfort.
9. Allowing for Bedding, Ventilation, and Everyday Use
When we speak to caravan owners, one of the most common questions is whether they should order the mattress exactly to base size or slightly smaller. If you want hotel-style tight fitted sheets, matching the base size closely works well, but for tucking flat sheets you might choose to come in by 1 cm to 2 cm all round.
You should also think about ventilation. Many caravan beds have slatted or ventilated bases, and using a breathable mattress like Coolplus™ or Novolatex™ helps prevent condensation build up under the bed, especially in colder weather.
Depth Choices and How They Affect Space
Our sizing guidelines include advice on which depths work best for different layouts, such as low-profile bunks or deep island beds. Thicker does not always mean better if it reduces safe headroom or makes it hard to get in and out of bed comfortably.
If you are unsure which depth to pick for your chosen size and shape, contact us with your measurements and we can recommend a depth that balances comfort, access, and safety.
10. Step‑by‑Step Checklist for Choosing the Exact Bed Size and Shape
To make the whole process straightforward, we recommend working through a simple checklist. This keeps you focused on facts rather than guesswork and reduces the chance of ordering a mattress that is slightly too big or too small.
- Clear the bed base and remove the old mattress completely.
- Measure the full length and width at the widest points in centimetres.
- Note any curves or cut outs and which side they are on when viewed from the foot.
- Decide whether you want the mattress to match base size or be slightly smaller for bedding.
- Choose the mattress family, Coolplus™ for cooler contouring or Novolatex™ for bouncy support.
- Select the correct shape from our product range, such as rectangular, bunk, narrow cut out, or curved corner.
- Confirm the depth that suits your bunk or fixed bed for safe and comfortable use.
If any step feels unclear, send us your measurements and a quick sketch and we will talk you through the best options. Our goal is always the same, a mattress that fits your caravan bed base precisely and supports you properly every night.
Conclusion
Choosing the exact size and shape for caravan beds is not about guessing a standard label like single or double, it is about matching the mattress precisely to your bed base, layout, and everyday needs. When you measure carefully, think about how you move around the space, and pick a shape that mirrors your base, you avoid wasted space and enjoy better sleep.
Whether you need a straightforward rectangular bunk, a narrow cut out around a wardrobe, or a generous super king for a central bedroom, we can supply a Coolplus™ or Novolatex™ mattress that fits accurately. If you would like personalised advice, we are always happy to look at your measurements and help you find the perfect fit for your caravan.