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Comfort trial

Comfort fillings
Firmness rating

Support system
The Luna® 4000 Support Gel Memory Pocket Hybrid Mattress offers durable Luna Pocket® sprung support and refreshing Luna Fusion Cool Memory Foam® comfort.

Individualised springs encased in cloth pockets. Expertly adapting to movement to distribute personalised support to each part of your body.

Small, individually cased springs provide added comfort to the mattress whilst offering soothing pressure relief. Mini springs decrease motion transfer so you can share the bed undisturbed.

Supremely breathable and cooler than traditional memory foam. Gel foam provides fresh sleeping experience that soothes aches and pains.

Supportive foam that promotes spinal alignment and a personalised sleeping experience by moulding to your body. It is durable and resilient and it holds its shape for an extended period of time.
Firmer than a medium mattress for extra support

Durable edge-to-edge support provides a maximised sleeping surface for a more secure sleep. Sit and lay comfortably right to the very edge with zero 'roll-off' sensation.

A rolled-up mattress is efficiently packaged for easy manoeuvring. Because of its smaller, compact design, less delivery vans are needed, providing a great environmentally-friendly option.

About 9.8 inches deep. Depth is an important factor when buying a mattress as it can affect the suitability for particular bedding, mattress toppers and bed frames.

For your peace of mind

This product conforms to BS7177: 2008, for use at home
Enjoy the comfort of the Luna® 4000 Support Gel Memory Pocket Hybrid Mattress night after night.
Durable springs
Featuring a core of 2000 Luna Pocket® springs that are encased into individual fabric pockets. This design helps them respond to changes in weight and movement to distribute support where you need it. Luna Pocket® springs encourage better sleep posture to help align your back and ease aches.
2000 mini springs offer a bouncy, comforting feel. Their small design creates pockets of airflow to provide a fresher feel.
Cushioned comfort
The Luna® 4000 support mattress features a 2cm layer of Luna Fusion Cool Memory Foam® that adapts around your body. This helps the foam lift weight off your body and encourage pressure relief for a more relaxing rest.
Luna Fusion Cool Memory Foam® is designed with a breathable, open cell structure to enhance airflow. This helps to dispel heat to provide a fresher cooler feel than standard memory foam.
Two 3cm layers of Reflex foam provide added cushioning to the mattress for extra comfort.
Perfectly sturdy
Designed with a secure foam encapsulated border this mattress is extremely strong. Holding up against weight so you can sit and sleep right to edge without a risk of falling due to a sagging border.
Rated medium to firm to offer extra support and provide a balanced feel that is not too soft or too firm.
The reliable choice
Treat yourself to a mattress that will stand the test of time. With minimal maintenance, this single-sided mattress just requires rotation top to toe seasonally.
Purchase with confidence with a 10 Year Guarantee.
This mattress comes with a 100-Night Comfort Trial - like all of our mattresses!
The trial lets you test your mattress for up to 100 nights. If it's not quite right for you, you can exchange it for a new one. To be eligible for the Comfort Trial, you'll need to purchase a mattress protector from Mattress Online with your new mattress.
It can take some time to get used to a new mattress, which is why we ask you to sleep on your mattress for 30 nights. If you're not happy with the feel after 30 nights, simply contact our Customer Service Team, and we'll arrange a mattress exchange.
| Firmness | Medium to firm |
| Comfort fillings | Mini Pocket Springs, Gel Foam |
| Support system | Pocket Springs, Reflex Foam |
| Pocket spring count | 4000 |
| Edge support | Yes |
| Rolled-up | Yes |
| Single-sided | Yes |
| Guarantee | 10 years |
| Fire resistance | Conforms to BS7177: 2008, for use at home |
| Downloads | Luna Product Care and Guarantee |
| Size | Width | Length | Depth |
|---|---|---|---|
| Single | 90cm | 190cm | 25cm |
| Small Double | 120cm | 190cm | 25cm |
| Double | 135cm | 190cm | 25cm |
| King Size | 150cm | 200cm | 25cm |
| Superking | 180cm | 200cm | 25cm |
Please allow for a tolerance of +/- 2cm
The following delivery methods apply to mainland England and most of Scotland, Wales and Northern Ireland. Please read our delivery page for more information.
Next day delivery (weekdays only) Order before | FREE |
Weekday of your choice Order up to 60 days ahead | FREE |
Weekend On Saturday or Sunday of your choice | FREE |
Delivery to the front door of your building | Yes |
Two-hour delivery time slot We’ll let you know on the day before your delivery | Yes |
Call to let you know we’re on our way On your delivery day | Yes |
Delivery to your room of choice | £20.00 |
Mattress recycling We'll take away your old mattress | £35.00 |
Delivery is on an all-day service, 7am - 8pm for mainland England and most of Scotland, Wales and Northern Ireland.
Need further information? Please visit our Delivery page.
A balanced snapshot of what customers love (and what they don't), generated by AI.
Mattress is fantastic! Quite firm for medium firm but both my partner and I have never felt better! Worth every penny. Purchase and delivery tracker were also excellent - arrived within 2 days!
Verified Purchase
Really friendly and helpful staff
Verified Purchase
Amazing mattress. So comfortable, the perfect hardness and so good for my back. Sleep really well on it and feel very supported at night.
Verified Purchase
Mattress has been absolutely superb. We have both slept brilliantly since purchasing.
Verified Purchase
Good mattress
Verified Purchase
This mattress is, by far, the best mattress I've used in about 10 years. I can't believe how deeply I've been sleeping. If you've got any aches and pains or are on the heavy side, like myself, then you'll love it too. Will be purchasing another for the campervan soon.
Verified Purchase
Order process easy and clear. Delivery staff polite and efficient. Mattress comfortable and firmness as expected.
Verified Purchase
Well described. Product is excellent. Delivery was fast and on time. No issues.
Verified Purchase
Superbly comfortable as it supports all of your body. There's no disturbing your partner either
Verified Purchase
Been using this now for over a month and I am genuinely pleased, the quality of my sleep has improved significanly, As a side sleeper, If you want a medium to firm mattess this is excellent, the hybrid foam top layer has some give and you sink into it a little, but are also immediately supported and dont sink too much so its the right balance imo. I searched for mattresses for sometime, and tested many in person at several bed retail outlets, but I did not want to spend over a £1000 on a mattress so I looked online and I'd say this easily compares to mattresses with a £1000+ price tag in stores. really good value for money.
Verified Purchase
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Sunday: 10am - 4pm
Mon-Sat: 09:30am - 17:30pm
Sunday: Closed
customerservice@mattressonline.co.uk