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Comfort trial

Comfort fillings
Firmness rating

Support system
Enjoy the firm feel of the Hypnos Cawthorne Support Mattress. Featuring a core of ReActive™ springs for tailored support and breathable cotton and eOlus™ for refreshing comfort.

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

Natural cotton fibres create a perfectly fresh sleeping environment. The soft fillings regulate your body temperature and wicks away moisture.

Soft synthetic fillings create an incredible cosy feel. These fillings are durable and resilient, maintaining its shape and quality. A great balance between comfort and value for money.

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 traditional and elegant design that holds fillings in place whilst enhancing the stability of the mattress. The luxurious tufting ensures zero shifting, shape loss or sagging.
Firmer and more supportive

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.

With a single-sided mattress, there's no need to flip. Simply rotate every few months to care for your mattress. Fuss free mattress maintenance!

For your peace of mind

Expertly handcrafted in the UK. This product helps to support our economy and helps to reduce environmental impact.

This product conforms to BS7177: 2008, for use at home

For the highest standards of quality and safety
Explore the firm support and luxurious comfort of the Hypnos Cawthorne Support Mattress.
Supportive core
Experience ultimate support with 1200 unique ReActive™ springs that are personalised to your movement. Each spring sits within its own fabric pocket, helping to increase responsiveness and isolates movement. Delivering soothing support and reducing partner disturbance from motion.
The outer rows of the spring unit feature a firmer gauge to create a sturdy edge that does not dip under pressure. This is further reinforced with a durable rod edge so you can sleep right to the edge without a ‘roll off’ feel.
Completing the supportive core is a dual density polyester pad. This layer is designed to provide durable support to the spring unit, encouraging equal weight distribution. Helping you truly unwind each night.
Cotton comfort
The smart blend of cotton and polyester combines their comforting properties with increased breathability and moisture wicking. Helping you experience blissful comfort and a fresher sleep space that does not trap heat.
Refreshing fibres
Hypnos’ exclusive eOlus™ fibres are made from recycled materials and spun into breathable, comforting fibres. They promote airflow to dispel heat whilst offering a secure, firmer feel to keep you supported and cosy all night.
Firm support
Enjoy the firm feel of this mattress, a great choice if you’re looking for extra support. Traditionally tufted, this finishing secures the mattress layers in place and enhances the firm feel.
120 years of expertise
Holding over 120 years of expertise handcrafting luxury mattresses, the experts at Hypnos are skilled in delivering uncompromisable comfort and support.
Complete with a 5 Year Guarantee for ultimate reassurance.
This mattress comes with a 60-Night Comfort Trial - like all of our mattresses!
The trial lets you test your mattress for up to 60 nights. If it's not quite right for you, you can exchange it for a new one.
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 | Firm |
| Comfort fillings | Cotton, Soft White Fibres, Tufted |
| Support system | Pocket Springs |
| Pocket spring count | 1200 |
| Edge support | Yes |
| Single-sided | Yes |
| Guarantee | 5 years |
| Awards & accreditations | Handcrafted in the UK, Approved by the National Bed Federation |
| Fire resistance | Conforms to BS7177: 2008, for use at home |
| Downloads | Hypnos Product Care and Guarantee |
| Size | Width | Length | Depth |
|---|---|---|---|
| Single | 90cm | 190cm | 25cm |
| Small Double | 120cm | 190cm | 25cm |
| Double | 135cm | 190cm | 25cm |
| European Double | 140cm | 200cm | 25cm |
| King Size | 150cm | 200cm | 25cm |
| European King Size | 160cm | 200cm | 25cm |
| Superking | 180cm | 200cm | 25cm |
| Superking Zip and Link | 180cm | 200cm | 25cm |
| Emperor | 200cm | 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 | £17.50 |
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.
The mattress is very comfortable. It is very firm, there is no softness on the outer edges so you don’t feel like you are falling out of bed. The delivery by Mattress-online was excellent. The delivery men were helpful and obliging despite the pouring rain and steps to gain access, followed by yet more steps to deliver to the first floor bedroom. I was very pleased with the whole experience. Highly recommended.
Verified Purchase
On the firm side , that suits my wife and me , delivery and taking away of old mattress all went well , Thank you MattressOnline.co
Verified Purchase
Excellent nights sleep every night. With the Kings seal on it the quality can't be understated.
Verified Purchase
Took a while to get use too
Verified Purchase
Support around the edges. Firm but not hard. Lovely material and not too heavy to move. Especially like the fact it does not have to be completely turned over, only needs twisting.
Verified Purchase
Really comfortable great price delivery when stated. Would definitely buy again from them.
Verified Purchase
Absolutely fantastic best purchase to date,always had Severe back pain,with this mattress I feel that im floating on air. Price and delivery was brilliant aswell.
Verified Purchase
it is a very good matress very pleased with it
Verified Purchase
Very comfortable and good for back pain I would recommend and very quick delivery
Verified Purchase
Very satisfied with this supportive mattress especially as it does not sag at the edges. This was our second purchase as the first was replaced under the 60 day trial. I was very happy with the service I received from Mattress Online - highly recommended.
Verified Purchase
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Mon-Sat: 9:30am - 5:30pm
Sunday: 10am - 4pm
Mon-Sat: 09:30am - 17:30pm
Sunday: Closed
customerservice@mattressonline.co.uk