Emma Diamond Hybrid Deluxe Mattress

The Emma Diamond Hybrid Deluxe is a premium hybrid mattress that combines AeroFlex™ individually wrapped pocket springs with a multi-layer foam system including Diamond Cool™ graphite-infused foam, HRX Comfort Foam, and a precision-engineered HRX Support base. Finished with Emma's PolarLuxe™ cooling cover, this is a soft medium-feel mattress built around temperature regulation, pressure relief, and responsive support that works for all sleeping positions.

Who Is This Mattress For?

A premium hybrid mattress best suited to sleepers who want soft medium support, effective cooling technology, and minimal partner disturbance.

Soft Medium Feel - 2/6: A gentle balance of softness and support. Soft Medium is perfect for side sleepers and combination sleepers who want pressure relief with a little more stability and support.

Best for

• Side sleepers - the foam comfort layers cushion shoulders and hips to relieve pressure points while keeping your spine aligned
• Back sleepers - supportive enough to maintain the spine's natural curve without feeling too firm
• Combination sleepers - responsive AeroFlex™ pocket springs adapt as you move, so the mattress works however you sleep
• Couples - individually wrapped springs move independently so you won't disturb each other
• People with pressure point pain - the comfort foam layers distribute weight evenly and ease pressure on shoulders, hips and joints
• Hot sleepers - Diamond Cool™ graphite foam and the PolarLuxe™ cooling cover work together to draw heat away and regulate temperature throughout the night
• Sleepers up to 114kg (18st) per side

Not ideal for

• Front sleepers who need firmer support
• Heavier sleepers who may benefit from a firmer mattress for better support and durability

Inside This Mattress

PolarLuxe™ Cover
What it is: A premium cover crafted with advanced heat-conducting fibres that deliver an immediate cooling sensation upon contact with skin.
How it helps you sleep: Rapidly absorbs and dissipates heat to regulate temperature and maintain a consistently cool, fresh sleeping environment, preventing heat build-up for restful, uninterrupted sleep.

Diamond Cool™ Foam Layer
What it is: Emma's Visco-elastic foam engineered with graphite particles that draw away excess heat to support natural temperature regulation.
How it helps you sleep: Promotes airflow and maintains a cool, comfortable sleep environment throughout the night by actively dispersing body heat away from the surface.

HRX Comfort Foam
What it is: Emma's High Resiliency Extra foam that provides sufficient counter-pressure to keep the spine evenly aligned.
How it helps you sleep: Designed to keep the spine in proper alignment in any sleeping position, promoting maximum relief, rest, and recovery throughout the night.

AeroFlex™ Pocket Springs
What it is: Individually encased steel pocket springs made from high carbon steel, each moving independently to respond to body weight and movement.
How it helps you sleep: Provides adaptive, full-body support with excellent motion isolation, meaning you won't be disturbed when your partner moves - and the open structure promotes airflow through the mattress core.

HRX Support Foam Base
What it is: Emma's High Resiliency Extra support foam providing counter-pressure for consistent spinal alignment across all sleeping positions.
How it helps you sleep: Supports the spine in its natural position regardless of how you sleep, helping to alleviate pressure and ensure a restorative, pain-free night's rest. This base layer also reinforces the long-term structure of the mattress for lasting performance.

Non-Slip Base
What it is: A specially designed anti-slip fabric on the underside of the mattress that anchors it firmly to the bed frame or base.
How it helps you sleep: Prevents the mattress from shifting during the night, ensuring it stays perfectly positioned so you enjoy uninterrupted, restful sleep.

Specification

Dimensions & Weights

How it Compares

Vs firmer models: The Diamond Hybrid Deluxe's soft medium feel gives noticeably more pressure relief at the shoulders and hips compared to firmer options. If you sleep on your side, share a bed, or run warm at night, this is likely the better fit. Firmer mattresses suit heavier sleepers, front sleepers, or those who want a more rigid, orthopaedic-style surface.

Vs softer models: The AeroFlex™ pocket spring core and HRX support foam give this mattress more structure than a pure soft option. If you want plush comfort without sacrificing support underneath, the soft medium feel here hits that balance well. A purely soft mattress may feel more immediately luxurious but is less likely to maintain spinal alignment consistently - particularly for combination sleepers or couples with different body weights.

Vs premium / luxury ranges: The Diamond Hybrid Deluxe sits at the top of Emma's retail-exclusive Deluxe range, sharing the same advanced cooling technology and individually wrapped pocket spring construction as their wider premium line. Where higher-price-point mattresses from other brands may differ is in the depth of natural fillings or hand-finishing. What this mattress delivers is engineered, technology-led comfort at a price point that doesn't compromise on performance.

10 Year Guarantee

The Emma Diamond Hybrid Deluxe is backed by Emma's 10-year manufacturer's guarantee against defects in materials and workmanship. With OEKO-TEX® certified foam layers and a precision-engineered spring and foam construction, this is a mattress built to deliver consistent performance for the long term - and the guarantee reflects exactly that.

Awards & Accreditations

National Bed Federation (NBF) Approved - Independently verified to meet strict UK standards for quality, safety and responsible manufacturing. It's a meaningful endorsement that confirms this mattress has been produced to the standards that matter most to UK consumers.

OEKO-TEX® Standard 100 - Every foam layer in the Diamond Hybrid Deluxe carries OEKO-TEX® Standard 100 certification, confirming the materials are free from harmful substances and safe for skin contact. For a mattress you spend eight hours a night on, that matters.

200 Night Mattress Trial

Choosing a mattress online takes trust. That's why the Emma Diamond Hybrid Deluxe comes with a 200 night comfort guarantee - if it doesn't feel right, we'll exchange it. View the full mattress trial policy.

Emma: the true sleeping experience

Made in the UK and Ireland, Emma is the UK's most-awarded sleep brand and the world's most-sold bed-in-a-box brand! Designed to be used on a variety of different bed frames, the Emma mattress is suitable for all types of sleepers, so whether you prefer to sleep on your back, stomach, or side, you will have a comfortable and supportive sleeping surface.

At Land of Beds, we are proud to be able to offer our customers high-quality, luxurious products that are affordable and accessible to all consumers. Our independent customer reviews rate Emma's products 4.7 out of 5, giving us the confidence to provide Emma with our seal of approval and our customers' valuable insight when making informed purchasing decisions.

Combining world-class German engineering with the latest advancements in foam and spring technology, Emma uses high-quality materials and employs advanced technologies to produce its mattresses. The breathable Airgocell® foam and 3-layer zone profile adapt to every body shape to provide each body area with the necessary support, improving pressure distribution on the body. At the same time, their patented technology ensures the best spinal alignment. Emma has a good reputation for customer service and satisfaction, including offering extended sleep trials and a 10-year warranty on their products.