A modern light oak wood bed frame with a white mattress and bedding, styled in a bright, minimalist bedroom with a navy blue accent pillow and throw blanket.
A white textured mattress shown on a light wood bed frame, styled with a navy blue pillow and white pillows in a bright bedroom setting.
A white rectangular mattress shown at an angle on a plain white background.
A white mattress shown from a top-down perspective on a solid white background.
A close-up of a white mattress showing its textured vertical channel design and side profile on a clean white background.
Close-up of a white textured mattress corner with visible channel tufting and a subtle brand mark on the side.
Close-up of a white textured mattress with subtle horizontal ribbing and the embossed text 'COOL TOUCH' visible near the centre.
A modern light oak wood bed frame with a white mattress and bedding, styled in a bright, minimalist bedroom with a navy blue accent pillow and throw blanket.
A white textured mattress shown on a light wood bed frame, styled with a navy blue pillow and white pillows in a bright bedroom setting.
A white rectangular mattress shown at an angle on a plain white background.
A white mattress shown from a top-down perspective on a solid white background.
A close-up of a white mattress showing its textured vertical channel design and side profile on a clean white background.
Close-up of a white textured mattress corner with visible channel tufting and a subtle brand mark on the side.
Close-up of a white textured mattress with subtle horizontal ribbing and the embossed text 'COOL TOUCH' visible near the centre.

  • Mattress core

    Foam core

    A supportive foam core provides a steady foundation for the comfort layers.

  • Comfort layer

    Reflex foam

    Reflex foam cushions and supports your body for a comfortable, responsive feel.

  • Firmness

    Extra firm

    An extra-firm feel with very little give, for sleepers who like their support on the stronger side.

Posture-Form Model 40-300 High Density Foam Mattress

£242.00 £399.00
  • High-density reflex foam core
  • Extra firm comfort
  • Made in the UK
  • Delivery usually in 2–4 working days
  • 5-year manufacturer’s warranty
Size
Made to order craftsmanship
Made to order, express delivery
Delivery in just 2-4 working days
When you order with us: A fresh new mattress is made just for you... This is better for hygiene, quality control and will ensure your new mattress has not remained in storage for a long time.
This mattress is delivered straight from the factory of our manufacturing partner to your door.
How delivery works
1. Once your mattress has been manufactured, inspected and packaged it then gets booked in for collection
2. This is then collected by one of our trusted delivery partners and we can pass on the tracking details provided by the courier.
3. Our courier will then contact you directly with a proposed delivery date, which you can re-arrange if not suitable
4. They will then follow up with a time slot, so you know when to expect your mattress

  • Mattress core

    Foam core

    A supportive foam core provides a steady foundation for the comfort layers.

  • Comfort layer

    Reflex foam

    Reflex foam cushions and supports your body for a comfortable, responsive feel.

  • Firmness

    Extra firm

    An extra-firm feel with very little give, for sleepers who like their support on the stronger side.

Description

The Posture-Form Model 40-300 High Density Foam Mattress is certainly not for the faint hearted when it comes to firmness! Designed for those who love a seriously solid sleeping surface, this extra firm orthopaedic mattress delivers exceptional support without the sinking sensation of softer mattresses.

At its heart is a generous 20cm layer of high-density 40/300 reflex foam, providing a resilient and supportive sleeping surface that helps distribute body weight evenly and maintain healthy spinal alignment. Unlike traditional sprung mattresses, its solid foam construction offers consistent support across the entire mattress, with no springs, creaks or squeaks to disturb your beauty sleep!

Wrapped in a soft stretch knit fabric, the mattress features a quilted CoolTouch cover for a comfortable and breathable finishing touch. Better still, the removable zipped cover makes keeping your mattress fresh and hygienic that little bit easier. The durable reflex foam is designed to retain its shape and supportive feel, making it a great choice for anyone who prefers long-lasting, no-nonsense comfort.

With an extremely firm feel, the Model 40-300 is ideal for those seeking maximum support with very little give. And getting it into your bedroom couldn't be easier! Delivered vacuum-packed and rolled, it's much easier to manoeuvre through doorways and upstairs before unwrapping it ready for a seriously supportive night's sleep.

⚠ Warning: This mattress is extremely firm: side sleepers, proceed with caution! Perfect for those who love rock-solid support, but if you're after something soft and cushy, this might not be your match.

Posture-Form Model 40-300 High Density Foam Mattress Information:

  • Depth of the mattress: 20cm
  • Firmness rating: Extra Firm
  • Delivered in 2–4 Working Days
  • 5 Year Manufacturer's Warranty
  • Made in the UK

Why choose this mattress?

  • A solid surface with very little give. The resilient 40/300 reflex foam suits sleepers who like to feel supported on top of the mattress.

  • Even pressure across the surface. The continuous foam core helps spread your weight for pressure relief while keeping its extra-firm feel.

  • A cool first touch. The quilted CoolTouch knit feels soft against the skin as you settle into bed.

  • Easier access upstairs. The rolled pack fits through tighter spaces on its way to the bedroom.

  • A cover you can take off. The zip makes it easy to remove the cover when it needs freshening up.

Features

  • Foam core

    A supportive foam core provides a steady foundation for the comfort layers.

  • Reflex foam

    Reflex foam cushions and supports your body for a comfortable, responsive feel.

  • Extra firm

    An extra-firm feel with very little give, for sleepers who like their support on the stronger side.

  • Cool-touch fabric

    Cool-touch fabric gives the sleeping surface a refreshing feel.

  • Quilted cover

    A quilted finish adds a soft, even feel to the sleeping surface.

  • Removable cover

    The cover unzips for removal. Follow its care label when cleaning.

  • Orthopaedic

    Supportive construction for those who prefer an orthopaedic mattress. Check this model’s firmness rating to find your preferred feel.

  • Hypoallergenic

    Made with hypoallergenic materials, with everyday comfort in mind.

  • Delivered rolled

    Roll packing makes it easier to carry your mattress through tight spaces. Follow the supplied unpacking guidance.

  • 20cm depth

    Approximately 20cm deep — check your fitted sheets have enough room for a comfortable fit.

  • Made in the UK

    Made in the UK.

  • 5-year warranty

    Includes a five-year manufacturer’s warranty, subject to the manufacturer’s terms.

Dimensions
Width Length Depth20 cm
Illustration for guidance; not to scale.
Nominal mattress size guide
SizeWidth (cm)Length (cm)
3' Single90190
4' Small double120190
4'6 Double135190
5' Kingsize150200

These are nominal UK mattress sizes. Actual measurements can vary slightly; please contact us before ordering if you need an exact fit.

Depth: 20 cm

Specifications
TypeMattress
BrandPosture-Form UK
Mattress coreFoam core
Comfort fillingsReflex foam
FirmnessExtra/firm
Depth20 cm
Delivery formatVacuum packed and rolled
ConstructionSolid 40/300 high-density reflex foam
CoverQuilted CoolTouch stretch knit with a removable zipped cover. Follow the care label for cleaning.
Delivery formatVacuum packed and rolled
Warranty5-year manufacturer’s warranty, subject to the manufacturer’s terms.
Country of manufactureUnited Kingdom

FAQs
How firm is the Model 40-300?
Extra firm, with very little give. Choose it if you like to sleep on a solid surface. Side sleepers who prefer their shoulder and hip to sink in may find it too hard.
Does it contain springs or memory foam?
The support comes from a solid block of high-density reflex foam. It has a resilient feel with very little sink.
What does the CoolTouch cover feel like?
The quilted stretch knit gives the surface a soft, cool-to-the-touch finish over the extra-firm foam.
Can I remove the cover?
Yes. It unzips for removal. Check the care label before cleaning it.
How does it arrive?
It arrives vacuum packed and rolled, which makes tight doorways and stairs easier to navigate. Unpack it in the bedroom and follow the supplied expansion instructions.
How deep is the mattress?
The mattress is 20cm deep. Allow extra room in your fitted sheet if you use a topper.

beds4us reviews

I received excellent service from Matt and the team at Beds 4 us. Knowledgeable, polite, efficient and very helpful is the only way to describe the service I received from start to finish. I can totally recommend them and Matt's advice was spot on. Thanks guys well pleased with my new bed - Google Oct 2023

Rob Stuart

Bought a divan bed and mattress from beds4you and what a fantastic service I received. Very friendly, helpful and prompt. Bed is exactly what was advertised and described. Great delivery service, I definitely recommend and will be purchasing more in the near future - Google Oct 2023

Matt and his team were super helpful with my order from the moment I got in touch. They couldn’t be more helpful, especially when it came to available choices, talking through all the options and details so I understood. The delivery team were communicative, on time and very helpful, they even ensured they removed their shoes every time they came in and out, which was a lot! Highly recommended - Google Oct 2023

Phillop Tott

Matt and the team at Beds4us were extremely helpful and very quick to deliver our mattresses. They also disposed of the old ones for us, which was a great relief. Well done guys! - Google Oct 2023

Chloe Champion

Staff were incredibly helpful in store. I left very happy with my new mattress and bed frame. Highly recommend - Google Oct 2023

Erin O'Connor

Good prices and excellent service, all items delivered promptly at the agreed times - Google Nov 2023

Kathy Bloom

Matt provided an excellent service, the sofas I needed were in stock and I was able to take away - Google Nov 2023

Sean Richards

We purchased a Children's high-sleeper bed with desk underneath. Really pleased with the quality and price. Matt, James and the team were brilliant! Will definitely shop with them again. - Google Dec 2023

Paul Devitt

Ordered a mattress today .. great service from the lads in the showroom .. they even managed to deliver the same day .. we shall be back .. thanks guys - Google Feb 2024

Sarah Mullender

What a great place staff were friendly attentive knowledgeable of the products
Which are outstanding quality and extremely good value.
A real hidden gem not to be missed. - Google Feb 2024

Here to help

Our friendly and approachable team are happy to answer any questions you may have. We will always offer advice when required and even source specific products, if they are not already part of our catalogue.

Free Delivery to Mainland UK

We are proud to offer free delivery across the UK to help bring down the price for our customers. Each product has different lead times depending on the supplier and if the item it made to order. Because of this some items may arrive separately.

Products

Our products have been carefully selected for their durability, and taking into consideration our low-price policy they are great value for money. We take pride in what we offer in our catalogue and showroom as well as our very competitive online pricing.

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