Emma Hybrid Thermosync

Emma Hybrid Thermosync Mattress Review UK (2025)

Written by Lily

Senior writer

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Last updated: 14.01.2025 Reading time: 6 Min.

Lily

Senior writer

Lily is a dynamic and adventurous individual with a passion for both writing and exploring the world. Her love for travel fuels her creativity, inspiring the vibrant stories she weaves with her words.
 

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The Emma Hybrid Thermosync (previously the Emma NextGen Cooling) mattress is the latest innovation from Emma Sleep UK.

Designed with advanced cooling technologies and zoned support, this mattress promises to deliver the perfect balance of temperature regulation, comfort, and spinal alignment.

But does it live up to the hype?

And is it worth the investment? 🧐

Let’s dive into our Emma Hybrid Thermosync mattress review.

emma nextgen cooling mattress

Who is the Emma Hybrid Thermosync mattress most suitable for?

The Emma Hybrid Thermosync is currently Emma Sleep's most advanced cooling mattress on the market, and it's well suited to:

  • People who enjoy medium-firm mattresses.
  • Average-weight sleepers with any sleeping position preference.
  • Heavier-weight side sleepers.
  • Lighter-weight front and back sleepers.
  • Those looking for superior edge support.
  • Couples and restless sleepers.
  • People looking for the best cooling features with some memory foam comfort.

Check out our rating below before deep-diving into the rest of the article:

Rating

4.6
  • Material

    High-quality materials.

  • Comfort

    Very comfortable.

  • Off-gassing

    You may experience some off-gassing.

  • Breathability

    Designed for advanced cooling, but still features memory foam.

  • Motion transfer & support

    Excellent support.

  • Delivery & returns

    Free delivery with a 200-night trial.

  • Value for money

    Good mattress but expensive.

Material
Comfort
Off-gassing
Breathability
Motion transfer & support
Delivery & returns
Value for money

Emma Hybrid Thermosync mattress composition

The Emma Hybrid Thermosync Mattress features 6 layers and has been designed with comfort, support, and advanced cooling in mind:

1. UltraDry™ breathable cover

This Emma Hybrid Thermosync mattress cover is designed to keep you fresh and dry.

It wicks away moisture, promotes airflow, and is easily removable and washable for added convenience.

2. Temperature-regulating foam

The ThermoSync™ foam layer is infused with graphite particles that actively capture and disperse excess body heat.

This helps maintain the ideal sleep temperature for longer, uninterrupted deep sleep.

3. Freshness-enhancing foam

This foam layer promotes enhanced airflow while gently cradling your body.

It delivers a comforting "full-body hug" that supports achy areas and relieves tension.

This is also a new layer that wasn't available in the Hybrid Thermosync's previous version, the Emma Luxe Cooling.

4. Adaptive memory foam

The Halo memory foam layer moulds to your body’s unique shape, ensuring targeted spinal alignment, superior pressure relief, and a truly personalised sleep experience.

5. Supportive pressure-relief foam

Providing exceptional support, this foam layer promotes proper spinal alignment and reduces pressure points, making every night a restorative experience.

6. Zoned pocket springs

The 7-zone pocket springs provide tailored support to every part of your body.

From your head to your feet, these springs adjust to ensure optimal alignment and comfort in all sleep positions.

It's worth noting that the only major difference between the Hybrid Thermosync and the previous version of the mattress, the Luxe Cooling, is an additional fresh foam layer for added softness and airflow.

What does sleeping on the Emma Hybrid Thermosync mattress feel like?

We haven't yet fully tested the Emma Hybrid Thermosync but we loved its predecessor, the Emma Luxe Cooling.

The previous mattress was one of the most comfortable Emma mattresses we've ever slept on, and the NextGen, as the upgraded version, promises to be just as luxurious.

How firm is the Emma Hybrid Thermosync mattress?

The Emma Hybrid Thermosync Mattress offers a medium firmness, making it suitable for a wide range of sleepers.

It strikes the perfect balance between plush comfort and firm support, ensuring pressure relief and proper alignment for side, back, and stomach sleepers alike.

Emma has rated it a 7.5 on their firmness scale, where 1 is the softest and 10 is the firmest.

This makes it slightly firmer than many other mattresses, meaning it will be particularly well suited to those who enjoy firmer support, heavier-weight side sleepers, and back sleepers.

Does the Emma Hybrid Thermosync mattress sleep hot?

Like the Emma Luxe Cooling, the Hybrid Thermosync was designed with advanced cooling in mind:

  • It features an UltraDry™ cover and graphite-infused foam to actively prevent overheating, ensuring a refreshing night’s sleep even for hot sleepers.
  • The base is made of pocket springs, which creates additional ventilation channels and allows for better airflow, carrying heat and moisture away and keeping you cooler and more comfortable all night long.

Don't forget though that very hot sleepers or heavy sweaters may still be affected by the memory foam.

This is why we'd recommend trying the mattress during it's 200-night trial to see if it works for you.

We'd also recommend pairing it with a cooling duvet and cooling pillow if you're easily affected by temperature.

Is the Emma Hybrid Thermosyncg suitable for couples?

The mattress features impressive edge support, allowing sleepers to enjoy the entire surface without feeling like they might roll off - this makes it a great mattress for sex!

The high-density foam layers also effectively isolate motion, making it an excellent choice for couples.

You won’t be disturbed by your partner’s movements during the night.

If you're looking for a mattress that offers you excellent stability and support, some memory foam relief, and great temperature regulation features, the Emma Hybrid Thermosync will be a great go-to.

In what sizes is the Emma Hybrid Thermosync available?

The Emma Hybrid Thermosync mattress is available in all standard UK as well as some EU mattress sizes. 🇬🇧🇪🇺

  • UK Emma Hybrid Thermosync mattress single: 90 x 190 cm (3’ x 6’3”)
  • UK Emma Hybrid Thermosync mattress small double: 120 x 190 cm (4’ x 6’3”)
  • UK Emma Hybrid Thermosync mattress double: 135 x 190 cm (4’6” x 6’3”)
  • UK Emma Hybrid Thermosync mattress king: 150 x 200 cm (5’ x 6’6”)
  • UK Emma Hybrid Thermosync mattress super king: 180 x 200 cm (6’ x 6’6)
  • EU Emma Hybrid Thermosync mattress single: 90 x 200 cm (3’ x 6’7”)
  • EU Emma Hybrid Thermosync mattress double: 140 x 200 cm (4’7” x 6’7”)
  • EU Emma Hybrid Thermosync mattress queen: 160 x 200 cm (5’3” x 6’7”)

We’d recommend sticking to standard UK sizes as it’ll make finding suitable bed frames and bedding easier.

The Emma Hybrid Thermosync mattress has a height of 27 cm (10.6 inches).

This is a little above the bed-in-a-box standard - usually 25 cm (9.8 inches) - giving you that extra touch of luxury.

Your standard bedding will still fit comfortably though!

Check out Emma bedding:

  • Emma mattress protector
    Emma mattress protector
    Emma
    Mattress Protector
    Price from   £ 51.80 £ (74 )
    The Emma Mattress Protector is a breathable, waterproof & antibacterial layer that safeguards your mattress.
    "Get 5% off with our exclusive 'SLEEPHEROUK5' discount code."
    The Emma Mattress Protector is a breathable, waterproof & antibacterial layer that safeguards your mattress.
    "Get 5% off with our exclusive 'SLEEPHEROUK5' discount code."
    Price from   £ 51.80 (£ 74 )
    EXTRA 5% OFF WITH
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    -30% EMMA MATTRESS PROTECTOR£ 51.80

    Read Emma Protector Review
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  • Emma Essential Cotton Set
    Emma Essential Cotton Set
    Emma
    Essential Cotton Set
    Price from   £ 39.10 £ (45.99 )
    The Emma Essential Cotton set is a reversible duvet cover, sheet, and pillowcase set.
    "Get 5% off with our exclusive 'SLEEPHEROUK5' discount code."
    The Emma Essential Cotton set is a reversible duvet cover, sheet, and pillowcase set.
    "Get 5% off with our exclusive 'SLEEPHEROUK5' discount code."
    Price from   £ 39.10 (£ 45.99 )
    EXTRA 5% OFF WITH
    SLEEPHEROUK5Click to copy code

    -15% EMMA ESSENTIAL COTTON SET£ 39.10

    EXTRA 5% OFF WITH
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    -15% EMMA ESSENTIAL COTTON SET£ 39.10

Emma Hybrid Thermosync mattress prices and discounts

Single
£ 759
Double
£ 1,139
King
£ 1,259
Super King
£ 1,419

(Note: prices listed above are standard prices, excluding any current coupons and discounts)

The Emma Hybrid Thermosync isn't the cheapest mattress on the market, but it's a high-quality option.

Plus, you'll often find Emma Hybrid Thermosync discount codes, which can give you savings of up to 55%!

We'll advertise any current discounts throughout this article, but you can also make use of our Sleep Hero exclusive coupon. 🤫

Simply apply code "SLEEPHEROUK5" on checkout to get an extra 5% off.

This coupon code can be used together with standard promotions, but you won’t be able to apply it with other exclusive codes, like the Key Worker Discount for NHS staff or teachers.

What are the Emma Hybrid Thermosync mattress delivery and trial conditions?

Your new Emma Hybrid Thermosync mattress is delivered free of charge within 2 - 5 working days.

It arrives rolled, vacuum-sealed, and neatly packed in a compact box, making it easy to manoeuvre through narrow hallways or doorways.

emma nextgen mattress box

Setting it up is simple: Place the box on your bed frame, remove the mattress, carefully cut open the plastic wrapping, and unroll it.

The mattress will start expanding immediately and should reach its full size within 24 hours. ⏰

A slight off-gassing smell may be noticeable during this process, but it’s completely normal and should fade quickly.

The Hybrid Thermosync mattress also comes with Emma's standard 200-night trial period.

If you feel the mattress isn’t right for you at any point during this time, you can easily start the return process through Emma’s returns portal and receive a full refund.

Should you buy theEmma Hybrid Thermosync mattress?

The Emma Hybrid Thermosync mattress is ideal for those seeking excellent temperature regulation, comfort, and support.

Its graphite-infused foam, breathable layers, and zoned pocket springs ensure a cool and restful sleep.

With premium features, durable materials, and a 200-night trial, it’s a great choice for anyone looking to invest in better sleep quality.

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Lily

Senior writer

Lily is a dynamic and adventurous individual with a passion for both writing and exploring the world. Her love for travel fuels her creativity, inspiring the vibrant stories she weaves with her words.
 

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