Rejuvenated REM-Fit 400 Hybrid Mattress

£399.99

What is Total Value?

We identify three comparable products and track their actual selling prices, not the inflated prices they claim. Our Total Value is set at or below the average of these products. To see how Total Value is calculated, you can learn more here.

Others Total Value
£409.00 Save 42%

Select Your Size

• In stock | Free* 2-5 business days delivery

Rejuvenated REM-Fit 400 Hybrid Mattress

• In stock | Free* 2-5 business days delivery
  • Medium Support (6/10): Balanced comfort and support, ideal for side sleepers seeking proper alignment.
  • Good Housekeeping Approved 2026: Recognized for quality and performance.
  • Hybrid Comfort System: Open-cell memory foam and 2000 pocket springs offer zoned pressure relief and adaptable support.
  • Edge-to-Edge Stability & Motion Isolation: Reinforced edges and motion isolation ensure uninterrupted sleep.
  • Eco-Friendly Mattress Recycling: Convenient disposal for a greener choice.
  • Made in the UK: Quality craftsmanship from trusted a UK manufacturers.
£399.99

What is Total Value?

We identify three comparable products and track their actual selling prices, not the inflated prices they claim. Our Total Value is set at or below the average of these products. To see how Total Value is calculated, you can learn more here.

Others Total Value
£409.00 Save 42%

Select Your Size

Order in 9h 27min for FREE* Delivery from as soon as Wed, Jun 24 - Fri, Jun 26

Got questions? We're here to help!

We already have answers to the majority of questions. Use this page to find needed information

Open FAQ page

Chat with our customer service specialists right now. We are ready to help you at anytime, 24/7!

Start a chat

Why are Rejuvenated mattresses so cheap?

The rejuvenated mattress range are from our award-winning sleep range which have been returned during their 100-night trial period.

Every returned mattress is inspected for damage and faults and any returned mattresses deemed faulty or damaged are sent to a recycling centre.

Mattresses returned in excellent condition are steam cleaned, maintained and if required fitted with a brand-new REM-Fit mattress cover. The mattress is then rolled and boxed ready for next day delivery.

Why choose the 400 Mattress?

2000 premium pocket springs


Through rigorous testing, our sleep researchers found that springs below 8cm in height provided inadequate support and failed to isolate partner movement. For undisturbed sleep & superior support the REM-Fit 400 mattress uses 2000 premium pocket springs, 15cm tall.

Weightless pressure relief


Memory foam gently absorbs the weight of your body, providing a soft sleeping surface on top of the supportive spring system. Coupled with our hypoallergenic stretched outer fabric the end result is often described as a feeling of weightlessness.

Open cell memory foam


Our unique open cell memory foam provides advanced temperature regulation and won't heat up like standard memory foam. Overheating during sleep is one of the key reasons for unexplained waking during the night, disturbing our sleep cycles and affecting our overall rest & recovery.

Advantages of shopping with us

30 Night Free Trial


Sleep on it, jump on it and everything in between - it's yours for 30 nights to fall in love with. If it's not right for you, we'll collect for free and refund you in full.

Free 2-5 Days Delivery


Free day of choice delivery and Free 2-person delivery. Old mattress disposal can be selected at the checkout.

1 Year Guarantee


We're so confident in the build quality that we have included a 1-year full replacement guarantee at no extra cost - so you can sleep soundly for years!

0 Finance


Buy now, pay whilst you sleep. Finance your REM-Fit with DivideBuy. 0% APR financing as low as £31/month. Apply at the basket or checkout page.

Tired of Sleeping Hot?

REM-Fit memory foam benefits from a revolutionary open-cell construction keeping it cool!

Proven to wick moisture and dissipate heat away from the body keeping your sleep environment at just the right temperature

Introduction to REM-Fit's Durability Testing

At REM-Fit, durability is key.

We rigorously test our mattresses using the Juggernaut machine, which simulates 15 years of use, ensuring they meet our high standards of durability.

Watch the video to see our process in action and discover how our products stand the test of time.

Our mattresses fit all types of bed

Adjustable Bed

Divan Bed

Platform Top Base

Slatted Bed Frame

30 nights, to do as you please with it

Risk Free

We provide a risk-free sleep trial on all our mattresses. This allows you to sleep on a REM-Fit for 30-nights in the comfort of your own home and really put it to the test!.

What's the catch?

There are no catches. if the mattress, for whatever reason doesn't live up to your expectations, you can send it back for a full refund without collection charges!

Bedding-In

We request that you give your new REM-Fit mattress 30 nights to bed-in before you raise a return. This will give your body the right amounts of time to fully adjust

How to return?

How do I raise a return request? Simply email us at sales@rem-fit.co.uk. Please notes, our live chat assistants cannot process return requests.

Good Housekeeping Institute

"The five layers combine to provide a comfortable mattress which contours the body, offering brilliant support.
The mattress has found the perfect balance between support and comfort. With 6 effective layers leaving you feeling refreshed and ready for the day ahead."

Best Cooling Mattress

"There are many cooling mattresses out there but the REM-Fit 400 is the best choice, hands down"

Best Cooling Mattress

"The springs improve airflow and the upper Open Cell foam layer does an excellent job keeping the sleeping surface cool.

It's also a very supportive and it’s a mattress designed for all sleeping positions"

Comfort is in the detail

Frequently Asked Questions

See more of our mattresses

REM-Fit® Pocket 1000 Hybrid Mattress
From our customer data • 61,828 UK sleepers
Most people shopping for a medium-firm mattress come to us with back pain.
77% of medium-firmness shoppers in our data report back pain as a key concern. The Pocket 1000's medium-firm tension (7/10) is designed to support the spine without sacrificing the pressure relief side and back sleepers need. Like all REM-Fit hybrid mattresses, the open-cell memory foam layer actively circulates air through the night - so it stays breathable even for warmer sleepers.
See full data
84%
want temperature regulation
72%
want motion isolation
66%
sleep on their side
  • Medium-firm tension (7/10) - suits most sleepers and sleeping positions
  • Good Housekeeping Winner 2026
  • 1000 full-height pocket springs - responsive support across the whole mattress
  • Deep comfort foam layer - pressure relief without excess sink
  • Multi-zoned support - different support where your body needs it most
  • Reinforced edge support - no roll-off, maximum sleeping surface
  • Partner motion isolation - pocket springs move independently
  • Made in the UK
  • Old mattress removal - available at checkout
  • 200-night risk-free sleep trial
  • 15-year guarantee
  • Free next-day delivery

The REM-Fit Pocket 1000 is our best-selling hybrid mattress, combining 1000 full-height pocket springs with a deep comfort foam layer to deliver medium-firm support that works for most sleepers and sleeping positions. Good Housekeeping Winner 2026, Made in the UK, and backed by a 200-night risk-free trial.

Who is it for?

Ideal for couples, back sleepers and everyday sleepers who want reliable support without a mattress that feels too firm or too soft. At medium-firm tension (7/10), it suits a wide range of body types and is particularly good at absorbing partner movement so both sleepers stay undisturbed through the night.

What makes it different?

Full-height pocket springs travel the full depth of the mattress rather than sitting in a shallow layer, delivering more responsive, more consistent support from edge to edge. Reinforced side walls mean no roll-off at the edges and no wasted sleeping surface.

£349.99

What is Total Value?

We identify three comparable products and track their actual selling prices, not the inflated prices they claim. Our Total Value is set at or below the average of these products. To see how Total Value is calculated, you can learn more here.

Others Total Value
Single £507 £278.85
Small Double £597 £328.35
UK Double £634 £348.70
UK King £719 £395.45
Super King £898 £493.90
£279.99 £349.99
Save 20%
or £31 / m (9 months) with

Available in 5 sizes

REM-Fit® 5000 Lux Elite Hybrid Mattress
From our customer data • 103,958 UK sleepers
Our highest spring count. More support, more comfort, less disturbance.
The 5000 Lux Elite carries the highest pocket spring count in the REM-Fit range, giving it superior contouring and motion isolation compared to the other models. Like all REM-Fit hybrid mattresses, it uses open-cell memory foam that actively circulates air to prevent heat build-up - so 84% of shoppers who want temperature regulation are already covered.
See full data
77%
report back pain
72%
want motion isolation
65.8%
sleep on their side
  • Medium-firm tension (7.5/10) - luxury support for all sleeping positions
  • Good Housekeeping Approved 2026
  • 5000 dual-layer pocket springs - precise body contouring, superior motion isolation
  • Deep open-cell memory foam - comfort layer that actively cools as you sleep
  • Multi-zoned support - targeted support across the full body
  • Encapsulated edge support - no roll-off, maximum sleeping surface
  • Partner motion isolation - pocket springs move independently
  • Old mattress removal - available at checkout
  • 200-night risk-free sleep trial
  • 15-year guarantee
  • Free next-day delivery

The REM-Fit 5000 Lux Elite is our most advanced hybrid mattress, combining 5000 dual-layer pocket springs with deep open-cell memory foam for a sleep experience that is as supportive as it is luxurious. Good Housekeeping Approved 2026. Designed for those who want the highest level of comfort the REM-Fit range offers, and built to stay that way for years.

Who is it for?

The 5000 Lux Elite suits couples, hot sleepers and anyone who wants a premium mattress without compromising on support. At medium-firm tension (7.5/10), it sits between the everyday support of the Pocket 1000 and the corrective firmness of the 4000 Ortho Elite, making it the right choice for sleepers who want that balance of comfort and control.

What makes it different?

The jump from 3000 to 5000 springs is not just a number. More springs means finer zoning, more precise body contouring and better motion isolation between two people sharing a bed. The open-cell memory foam actively promotes airflow through the comfort layer, drawing heat away from the body as you sleep rather than trapping it the way traditional closed-cell foam does.

Formerly: 600 Lux Elite Hybrid Mattress

£629.99

What is Total Value?

We identify three comparable products and track their actual selling prices, not the inflated prices they claim. Our Total Value is set at or below the average of these products. To see how Total Value is calculated, you can learn more here.

Others Total Value
Single £771 £462.60
Small Single £771 £462.60
Small Single Long £771 £462.60
EU Single £771 £462.60
Small Double £1,006 £603.60
UK Double £1,058 £634.80
UK King £1,164 £698.40
EU King £1,397 £838.20
Super King £1,397 £838.20
£503.99 £629.99
Save 20%
or £42 / m (12 months) with

Available in 10 sizes

REM-Fit® 4000 Ortho Elite Hybrid Mattress
From our customer data • 30,413 UK sleepers
Most people choosing a firm mattress come to us with back pain.
84.5% of firm-mattress shoppers in our data report back pain as a concern. The 4000 Ortho Elite's orthopaedic tension (9/10) is designed specifically for this - maintaining spinal alignment through the night for both side and back sleepers. Like all REM-Fit hybrid mattresses, the open-cell memory foam layer actively circulates air through the night - so it stays breathable even for warmer sleepers.
See full data
84.7%
want temperature regulation
76%
want motion isolation
65.8%
want hypoallergenic materials
  • Firm orthopaedic tension (9/10) - corrective support for back pain
  • 4000 dual-layer orthopaedic pocket springs - firm, stable, long-lasting support
  • Stability-focused memory foam - minimal sink, correct spinal alignment
  • Multi-zoned support - targeted support across the full body
  • Encapsulated edge support - no roll-off, no sink at the sides
  • Partner motion isolation - pocket springs move independently
  • Old mattress removal - available at checkout
  • 200-night risk-free sleep trial
  • 15-year guarantee
  • Free next-day delivery

The REM-Fit 4000 Ortho Elite is a firm orthopaedic hybrid mattress designed specifically for back pain sufferers and those who need corrective spinal support. 4000 dual-layer orthopaedic pocket springs with stability-focused memory foam keep your spine correctly aligned throughout the night, without the sinking sensation of softer mattresses.

Who is it for?

The best choice if you suffer from back pain, prefer to sleep on your back or stomach, or simply need a firmer mattress that holds its shape under pressure. At firm tension (9/10), it delivers corrective orthopaedic support and is rated for sleepers up to 20 stone. It is also the right upgrade if your current mattress has started to sag.

What makes it different?

Most hybrid mattresses use a single layer of pocket springs. The 4000 Ortho Elite uses a dual-layer system, doubling the spring count and significantly increasing the stability and longevity of the support core. The stability-focused memory foam above the springs minimises sink, keeping your hips and shoulders from dropping out of alignment as you sleep.

Formerly: 500 Ortho Elite Hybrid Mattress

£499.99

What is Total Value?

We identify three comparable products and track their actual selling prices, not the inflated prices they claim. Our Total Value is set at or below the average of these products. To see how Total Value is calculated, you can learn more here.

Others Total Value
Single £709.00 £425.40
Small Single £709.00 £425.40
Small Single Long £709.00 £425.40
EU Single £709.00 £425.40
Small Double £968.00 £580.80
UK Double £1,027 £616.20
UK King £1,123 £673.80
EU King £1,345 £807.00
Super King £1,345 £807.00
£399.99 £499.99
Save 20%
or £44 / m (9 months) with

Available in 10 sizes

Elevate your sleep with comfortable pillows!

REM-Fit 500 Cool Gel Pillow
From sleep research • peer-reviewed, NIH 2025
Most hot sleepers say overheating is what keeps them awake.
82.5% of hot sleepers in a peer-reviewed study reported trouble sleeping because they felt too hot. The head is one of the body's primary heat release points - the 500 Cool Gel Pillow's gel-infused memory foam is engineered to draw heat away from the surface and dissipate it through the night.
See full data
84%
of UK mattress shoppers want temperature regulation*
up to 41%
of adults experience night sweats
15-19°C
ideal sleep temperature - most UK bedrooms run warmer
82.5%: peer-reviewed pilot study on cooling bedding, NIH, 2025. 84%*: REM-Fit Mattress Finder, 105,165 UK respondents. 41%: American Family Physician. Temperature: National Sleep Foundation. See UK Sleep Statistics 2026
  • Good Housekeeping Winner 2026 - Best Memory Foam Pillow
  • Cool gel-infused memory foam - natural cooling effect throughout the night
  • Supports correct spinal alignment - excellent pressure relief for head and neck
  • Ultra-light, stretchy, durable fabric - comfortable against the skin
  • Removable, washable cover - simple to keep clean

The REM-Fit 500 Cool Gel Pillow won Good Housekeeping's Best Memory Foam Pillow award in 2026, thanks to cool gel-infused memory foam that supports correct spinal alignment while keeping you cool through the night. The ultra-light, stretchy outer fabric and removable, washable cover make it as easy to maintain as it is comfortable to sleep on.

Who is it for?

Suited to anyone who wants the contouring support of memory foam without the heat retention that often comes with it. The cool gel infusion makes it a good fit for hot sleepers who still want pressure relief.

What makes it different?

Standard memory foam pillows tend to trap heat against the head and neck overnight. The gel infusion in the 500 Cool Gel actively works to disperse that heat, which is what helped it win Good Housekeeping's award for best memory foam pillow. Pairs well with any REM-Fit hybrid mattress for a complete, award-winning sleep setup.

from £59.99
or £20 / m (3 months) with
REM-Fit 400 Memory Foam Crumbed Pillow
From independent research • UK sleep studies
Most people are sleeping on a pillow past its replacement date.
The average UK adult keeps a pillow for 3.2 years - more than double the 1-2 year window recommended by sleep experts. As a pillow ages, its support degrades and allergen levels rise. The 400 Crumbed Pillow's memory foam crumbs and Re-Ax cover maintain consistent support and breathability across the recommended replacement window.
See full data
3.2 yrs
average time UK adults keep a pillow
71%
of people sleep on a pillow more than 2 years old
1-2 yrs
expert-recommended replacement window
3.2yr: Ergoflex UK survey, 2,200 respondents. 71%: Dr Michael Breus, board-certified sleep specialist. 1-2yr: Sleep Foundation. See UK Sleep Statistics 2026
  • Memory foam crumbs - contoured support that moulds to your shape
  • Aids correct spinal alignment - excellent pressure relief for head and neck
  • Re-Ax fibres - absorb excess heat and wick sweat away from the body
  • Ultra-light, stretchy, durable fabric - comfortable against the skin

The REM-Fit 400 Memory Foam Crumbed Pillow uses contoured memory foam crumbs rather than a single solid block, giving support that moulds to the shape of your head and neck while staying breathable. Re-Ax fibres in the cover absorb excess heat and wick sweat away from the body, so the pillow stays comfortable even on warmer nights.

Who is it for?

Suited to anyone who wants the support of memory foam with a softer, more adaptable feel than a single solid foam block. The crumbed structure also makes it more breathable than traditional moulded memory foam.

What makes it different?

Because the foam is broken into crumbs rather than poured as one solid piece, the pillow moves and adjusts with you more naturally, while still keeping the pressure-relieving properties of memory foam. Combined with the Re-Ax cover, it sleeps cooler than a standard solid memory foam pillow. Pairs well with any REM-Fit hybrid mattress for a complete sleep setup.

from £49.99
or £17 / m (3 months) with
Sold out
REM-Fit Deluxe Pocket Sprung Pillow
100%
of poor sleepers in one study cited pillow comfort as a significant contributing factor to their sleep quality. Research consistently shows pillow height and firmness are among the strongest predictors of restful sleep.
Source: Raj Dasgupta MD, Huntington Memorial Hospital, cited in National Geographic, 2025 • UK Sleep Statistics 2026
77%
of neck pain patients reported better sleep after switching to the right pillow
72%
of UK mattress shoppers want motion isolation*
84%
want advanced temperature regulation*
100% pillow comfort figure: peer-reviewed study cited by Raj Dasgupta MD in National Geographic (Dec 2025). 77% neck pain figure: Sørensen & Søgaard, Advances in Physiotherapy, 2006 (n=52). 72% and 84%* figures: REM-Fit Mattress Finder, 105,165 UK respondents — see full data.
  • 60 individual pocket springs - responsive, supportive feel
  • Soft white fibre filling - cushions the springs for added comfort
  • Breathable mesh border - helps air circulate through the pillow
  • Ideal for side and back sleepers - supports correct spinal alignment
  • 5-year guarantee - against defects in workmanship or materials

The REM-Fit Deluxe Pocket Sprung Pillow uses 60 individual pocket springs encased in soft white fibre filling, giving an ultra responsive feel that's noticeably different from a standard foam or fibre pillow. The springs work with you as you move through the night, helping maintain correct spinal alignment whether you sleep on your side or your back.

Who is it for?

Suited to side and back sleepers who find foam pillows either too soft or too firm. The pocket spring construction gives a more responsive, structured feel that holds its shape under the weight of your head and neck.

What makes it different?

Most pillows rely on foam or fibre alone, but the Deluxe Pocket Sprung uses the same individually-encased spring technology found in pocket sprung mattresses. This gives it a bouncier, more breathable feel than foam, with springs that respond independently rather than compressing as a single block.

Pairs well with any REM-Fit hybrid mattress for a complete sleep setup.

from £69.99
or £23 / m (3 months) with

Find the best mattress for you!

You are only 7 answers away from finding out which mattress is best suited for your sleep!

Up To 200 Night Trial

We provide a risk-free sleep trial on all our mattresses

Free Delivery

Free room of choice delivery. Old mattress disposal available

15 Year Guarantee

We’re so confident, we offer a 15 year guarantee!