Selected mattresses qualify for FREE memory foam pillow/s (limited time only)

Narrow mattresses made bespoke to size

Finding a mattress that is both comfortable and fits smaller spaces can be difficult, especially if you’re looking for a slim mattress for your caravan or an awkward room in the house. Without the right mattress, confined spaces can feel cluttered and unusable if space is not maximised correctly. Custom Size Beds manufacture mattresses to fit even the tightest of spaces. Whether its a caravan bed, a split cross bed for a boat or motorhome, or simply a comfortable addition to your box room, we can help.

Picturing yourself in a smaller bed can feel like nothing short of a nightmare, but sacrificing on space doesn’t mean you need to forgo comfort. Our narrow mattresses may be small in size but are bursting with comfort that will relax even the lightest of sleepers. Getting a custom short mattress for your room may sound challenging, but Custom Size Beds make it easy to create your dream room.

made to measure mattresses UK Kent

a replacement narrow memory foam mattress

Bunk mattresses are ideal for making the most of compact spaces. Our thin & narrow mattresses can be cut to any depth to ensure you have enough headroom.

single narrow mattress tailored to fit a caravan

This memory foam mattress was specially manufactured to fit the single bed of the Rollerteam T785. Although narrow, comfort for the sleeper is at a maximum.

Custom made narrow mattress with diagonal corner cut away

All our mattresses are made to order so can be cut to fit your unique space exactly. This mattress with a corner cut away helps to maximise the sleep area.

Narrow mattresses made to measure

Ordering a narrow mattress is simple!

The process of ordering a narrow mattress couldn’t be any easier. Follow the simple steps below to get hold of your new mattress.

  1. If you’d like a thin mattress, simply measure the width, length and thickness of the space you’d like to place it in, as shown in the diagram.
  2. After this, you can now place your order through our website. You can specify your custom dimensions on the online order form.
  3. Once ordered your new mattress will be manufactured and delivered to you as quickly as 2 working days!

Small on size, big on comfort

If you’re looking for a comfortable compact mattress to fit bunk beds, or an easy way to maximise your sleeping area without compromising on comfort, you will love our unique manufacturing techniques. Whether we’re making a customised thin mattress or a standard regular size mattress we use the same materials and production methods to ensure you get the best in comfort without any compromise. Designed to helps ease aches and pains, our dual layer mattresses provide the best of both pressure relief and support. For those who want comfort on a budget our Premium Memory Foam Mattress comes highly recommend. For those who want something that is extra to bounce back and respond, our ComfiCel Gel foam mattress is your best option. Those wanting the ultimate in pressure relief, support and temperature regulation then our ComfiCel Cool memory foam is the mattress to go for. Finally small mattresses which are big on comfort!

bespoke narrow mattress for the bed in a touring camper van


1,000’s of happy customers

A quick message to say that the mattress is excellent as was the whole service- helpful, simple and efficient

Annie Freud

It made our return journey back to Spain a lot more comfortable and relaxing! Money well spent – thank you!

David Wood

First chance to try the new mattress, what a difference! Super comfy and two great nights sleep. Thank you

Des Davis

The mattress fits well, is very comfortable, keeps us cool while we sleep, with no roll together. Just as advertised.

Tracey Rowbottom

Just had first sleep on our excellent new mattress. Delighted not to have a sore back this morning!

Peter Garrow

Very happy with result, it is comfortable and exactly as described and as ordered. Couldn’t be happier with the product.

Kyla Egan

Contacted Custom Size Beds, gave them the measurements, and within days received a perfect fit Gel foam mattress.

Paul Parton

It fits perfectly and is extremely comfortable, my only regret is we should have ordered one years ago!

Jo Eastwood

The cool memory foam is excellent with no overheating in summer even when temperatures are over 30°C

Adrian Addison

Ordered on Wednesday and delivered on Friday. That’s what I call service. And the measurements were spot on

Mike Moorse

The quality is spot on and it fits like a glove. Would not hesitate in dealing with this company again.

Pat Harvey

Amazing service. Mattress fits perfectly and is super comfy – had the best nights sleep in a long time.

Broghan Nelson

I got the ComfiCel Cool mattress with extra firmness. It’s firm, but not hard and is super comfy. My back problems are gone!

Jennifer Volk

Great customer service and the mattress was delivered very quickly. It fitted into our motorhome perfectly

Hazel Brend

This is an excellent company, first class advice and no fuss delivery all at a very reasonable price.

Carolyn Blackham
South Yorkshire

I cannot fault the product or the service I received from Custom Sized Beds! The new mattress is a perfect fit

Pete Jones
West Midlands

Our mattress was delivered in a matter of days. Its so comfortable, we would recommend this company to anyone

Steve French

I ordered this for a custom made bed deck for my son. It arrived when they said and its super comfortable


Every member of the team that I spoke to at Custom Beds was really helpful. Its such an efficient system

Caroline Sale

I cannot state how great this company is, from start to finish they gave me exactly what I wanted.

Jan Coles

All in all a great service and a fantastic item supplied by nice people at a reasonable price.

Milton Keynes
Call now for helpful advice from one of our experts

01634 926123 – Monday to Friday, 9AM to 5PM

Reasons to ditch springs

We’re experts when it comes to small narrow mattresses, so we’re always asked what’s best, new age memory foam, or traditional springs? Given the huge advances achieved with foam technology over the past decade, it’s no surprise that we’d always pick a memory foam narrow mattress. Sprung mattresses can lose up to 16% of their support in the 1st year alone, not to mention that each spring pushes back into your body with equal force meaning pressure points are inevitable. A quality memory foam mattress on the other hand distributes body weight evenly and reduces pressure by up to 80%. Memory foam also offers no motion transfer or partner roll together helping you get a better nights sleep.

When it comes to custom sizes for your small narrow mattress, memory foam wins again, with springs becoming somewhat problematic. You can’t have half a spring, so the size of your mattress has to be made in increments based on the size of each spring – not to mention that the added complexity results in higher production costs. Memory foam on the other hand can be cut to any size, and a simpler production process gives better value for money.

Memory Foam Mattress For small narrow beds

Request further information

The contact form below can be used to request a quote or further information for your specific requirements. Simply enter your contact information and any questions you may have, and one of our team will be in touch to assist you further.

At Custom Size Beds, we take privacy seriously and your details will never be sold to a 3rd party.


    Name (required)

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    Overall width, length & thickness (if known)

    Preferred mattress
    Premium Memory FoamComfiCel™ Gel FoamComfiCel™ Cool Memory FoamUnsure

    Type your message or any questions below. If you have dimensions we will be happy to send you back a scale production drawing

    (Optional) Upload a photo or diagram - Alternatively you can email your attachments to

    At Custom Size Beds we take your privacy seriously - Click here to read our privacy policy

    Made to measure narrow mattresses

    Practical but comfortable, our beds offer you the best night’s sleep you’ve had in years, whether you’re at home or away. Finding the perfect fit for the tightest space can be difficult, which is why we’re happy to cut each mattress to fit your perfect space. So not only will you have maximum comfort, but your space will look great too.

    Whether you’re looking for a small double for a touring caravan, new bunks for sleepers in the back, or a replacement hull bed for your boat, Custom Size Beds are happy to work to your exact dimensions. Our beds are convenient, practical and high quality- you’ll never have a bad night’s sleep again.

    A mattress can be a big investment for a family, so we know that your custom ordering process needs to be seamless from start to finish. We strive to go the extra mile, as it isn’t every day you upgrade to a custom size mattress. Our expert sales team and bed craftsman provide an unparalleled service that can match you with your perfect mattress. Don’t hesitate to contact us if you’d like to talk mattresses, or need any advice.

    If you’re travelling in your caravan or motorhome, a good night’s sleep helps you make the most of your experience. A small mattress doesn’t equal an uncomfortable one, so we make yours feel just as comfortable as your mattress at home. This all starts with our high-quality materials, so you can start your day ready for adventure. Luxurious but practical, our mattresses are not to be missed.

    We understand not everyone works int he same way. This is why we offer flexibility and a number of ordering options. You can either send requirements or send a cut out to scale. Before production, you’ll get to give your plans a once over before cutting and making starts.

    Any mattress can be challenging to fit and secure correctly, especially in tight spaces. Since each mattress is rolled prior to dispatch, you won’t need help from friends and neighbours. Your mattress will then fit through narrow spaces whilst remaining protected during transit and fully covered. All that’s left for you to do is unpack, and leave it to unroll. Wait 5-6 hours and your mattress will be ready for the perfect night’s sleep.