Adjustable Bed Mattresses

Why choose an adjustable bed mattress?

Adjustable bed mattresses are designed to move with an electric or motorised base, so you don’t have to choose between flexibility and everyday comfort. Our range includes purpose-built mattresses across different firmness levels and materials, so you can find one that suits your sleeping position and preferred feel.

Choosing a mattress made for an adjustable frame also helps protect the bed mechanism from the resistance or extra strain an unsuitable mattress can create.

How to choose the right adjustable bed mattress for the perfect night's sleep

Start by checking compatibility with your adjustable base, including the mattress dimensions and any manufacturer guidance.

Material also matters. Memory foam and latex are naturally flexible, while adjustable hybrids combine flexible comfort layers with a spring system that moves with the base. Traditional rigid innerspring or open-coil mattresses are usually unsuitable unless the manufacturer explicitly says otherwise.

Mattress depth can affect how easily it flexes. A very thick mattress can be harder to flex, while a mattress that is too shallow may not give you the support you prefer. Heavier sleepers may want deeper support layers, but the mattress still needs to remain pliable enough for the frame.

The mattress itself also counts towards the load on the motor, alongside the sleeper. Check the adjustable base’s weight limit, then compare firmness, guarantee and any available trial information before you buy.

Why shop at MattressNextDay?

Next day delivery - Get your mattress quickly, with next-day delivery available on eligible in-stock mattresses across the UK mainland.

Lowest price promise - Compare adjustable bed mattresses with extra reassurance around price.

Old mattress removal - Add mattress removal at checkout and we’ll collect your old mattress when your new one arrives.

Excellent reviews - See what verified customers have to say before choosing your adjustable mattress.

Award-winning retailer - Buy with confidence from a three-time NBF Online Bed Retailer of the Year.

British-designed quality - Choose British-designed mattresses built with carefully selected materials.

Need help choosing your next mattress?

Tell us how you sleep, the firmness you prefer and what you’d like to spend. MattressFinder™ will quickly narrow the range to options that suit you. Find your perfect mattress.

Buying guidance for adjustable bed mattresses

Choosing an adjustable bed mattress means considering more than just comfort. The mattress also needs to work properly with a moving base, so material, flexibility, thickness and weight are all worth checking before you decide.

Understanding mattress types: Memory foam vs hybrid vs latex for adjustable bases

Different materials flex differently, so check how the mattress is constructed and how it feels.

Specialist pocket sprung adjustable mattresses can also work well on adjustable bases because they’re built to flex as the bed moves. A standard sprung mattress may not offer the same flexibility.

Mattress thickness and flexibility guidelines for moving frames

There’s no single ideal depth for every adjustable bed. Thicker mattresses can provide more substantial support, which may suit heavier sleepers, but extra depth can also reduce flexibility.

Choose a mattress that gives you the support you need while still flexing with the base. The mattress itself also adds weight, so check the adjustable bed manufacturer’s load limit and any guidance on mattress weight before buying.

Keep the mattress and bedding in place

If the mattress and bedding move as the bed adjusts, check that the base’s mattress retainer is fitted correctly and that the mattress is centred.

Loose or poorly fitting sheets can also pull free when the frame moves. Use a sheet that matches the mattress depth, and consider elastic sheet straps or suspenders if the corners keep slipping.

Delivery, recycling, and guarantees

Get your adjustable mattress quickly - Free next-day delivery is available on eligible in-stock adjustable mattresses across the UK mainland.

Plan delivery around your setup - Where available, choose a weekend or preferred delivery date that works with the arrival of your adjustable bed or replacement mattress.

Check your guarantee before you buy - Guarantee lengths and sleep-trial options vary by mattress, so check the individual product page before ordering.

Learn more about our delivery and returns policies.

We make old mattress disposal easy for you

Add removal when you order - Add mattress removal when you order, and we’ll collect your old mattress when your new one arrives, so you don’t have to worry about disposal.

Your old mattress is broken down for recycling - Your old mattress is separated into its core materials so they can be reused and recycled rather than sent to landfill.

Less hassle on delivery day - Avoid arranging a separate collection yourself and have your old mattress taken away when your replacement arrives.

Find a great value adjustable mattress

Looking for the right mattress at the right price? Explore the latest MattressNextDay sale and compare offers on trusted brands, popular sizes and different comfort grades. Shop mattress sale.

Ask the expert about adjustable mattresses

When choosing an adjustable mattress, check that it works with your bed base, provides the support you prefer, and is suitable for the frame in terms of depth and weight. Our product experts answer common questions about compatibility, mattress type, weight and everyday use.

Martin Seeley, Product Expert at MattressNextDay, answers questions about adjustable mattresses.

Can any mattress go on an adjustable bed?

No. A mattress needs enough flexibility to follow the movement of the base without resisting it. A standard mattress may be the right size but still be unsuitable for an adjustable frame, so check the manufacturer’s compatibility guidance before using it.

What type of mattress is best for an adjustable bed?

Memory foam and latex are naturally flexible, which makes them well-suited to moving bases when the individual mattress is approved for adjustable use.

Purpose-built hybrids and pocket sprung adjustable mattresses can also work well because their construction is designed to bend with the frame. The best option for you comes down to firmness, cushioning and the level of support you prefer.

Can I use a pocket sprung mattress on an adjustable bed?

Yes, but only if it’s been designed for an adjustable base. Specialist pocket sprung adjustable mattresses use a construction that can flex as the frame moves.

Don’t assume that any sprung mattress will work. Traditional rigid innerspring or open-coil models may resist bending and can place unnecessary strain on the adjustable mechanism.

How thick should an adjustable bed mattress be?

There’s no universal mattress depth that suits every adjustable frame. The mattress needs to be deep enough to provide the support you want while remaining flexible enough to follow the base's movement.

Check both the mattress and adjustable bed specifications rather than choosing based on depth alone. Heavier sleepers may prefer more substantial support layers, but compatibility with the frame should still come first.

Does mattress weight matter on an adjustable bed?

Yes. The motor has to move the mattress as well as the person or people using the bed. A heavier mattress adds to the load on the mechanism, so check the bed manufacturer’s stated weight limit and any mattress-weight guidance before you buy.

How do I stop a mattress from sliding on an adjustable bed?

Make sure the mattress is centred and check that any mattress retainer or retaining bar on the base is correctly fitted. A mattress that’s the wrong size or not designed for an adjustable frame is also more likely to move awkwardly.

If the mattress keeps shifting, stop using the adjustment function until you have checked the bed and mattress instructions.

How do I stop sheets from coming off an adjustable mattress?

Use a fitted sheet that matches both the mattress size and depth. Sheets that are too loose or too tight can move when the head or foot of the bed is raised.

Elastic sheet straps or suspenders can help hold the corners in place while the mattress flexes.

Do adjustable bed mattresses come with guarantees or sleep trials?

Cover varies by product. Selected adjustable mattresses come with multi-year guarantees, while trial options and their terms can vary by model.

Check the individual product page before ordering so you know what’s included.

Can I get next-day delivery on an adjustable bed mattress?

Free next-day delivery is available on eligible in-stock mattresses across the UK mainland.

Availability depends on the product, your location and the order cut-off time, so check the delivery information before ordering.