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Comfort trial

Comfort fillings
Firmness rating

Support system
Discover the Hypnos Cawthorne Extra Firm Mattress, designed to deliver extra firm support with ReActive™ springs and luxury wool and cotton fibres for sumptuous comfort and temperature regulation.

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

Stay snuggly all night long. Perfect all year round, wool is a natural insulator and has great temperature regulating properties.

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.
Our firmest rating. Highly supportive with a very firm, sturdy feel

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.

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!

About 10.2 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

For the highest standards of quality and safety
The Hypnos Cawthorne Extra Firm Mattress delivers ultimate, soothing support so you can wake feeling recharged.
Exclusive support system
The core of 1000 ReActive™ springs is designed for ultimate support. Each spring is enclosed into its own individual fabric pocket. This promotes motion isolation and increases the responsiveness of the spring unit. Ensuring you are supported through every movement to promote better spinal alignment and ease aches.
A dual density eOlus™ fibre pad supports the spring unit, helping to evenly disperse pressure and promote equal weight distribution.
Comforting fillings
A blended layer of wool and polyester fibres offer comfort whilst enhancing the firm feel of the mattress. These fibres are inherently breathable, promoting open airflow to help dispel heat and moisture, keeping you feeling fresh in summer. Wool is naturally insulating, to help you stay cosy and warm in winter.
Adding to the comfort layers is a blend of cotton and polyester. This layer is absorbent and wicks away moisture from your body to keep you feeling cooler when needed.
Extra firm
Designed to provide soothing extra firm support, this mattress is the perfect choice if you prefer a firmer feel or need extra support.
Traditionally tufted, this design keeps the layers of the mattress secure and reinforces the firmness across the surface.
Maximised sleep space
An outer row of firmer springs on the core unit creates a durable mattress edge. This is enhanced by a secure rod edge across the perimeter of the spring unit. So you can sleep undisturbed by a ‘roll off’ feel and enjoy a larger sleep space. Perfect when sharing the bed with a partner.
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 | Extra firm |
| Comfort fillings | Wool, Cotton, Soft White Fibres |
| Support system | Pocket Springs |
| Edge support | Yes |
| Single-sided | Yes |
| Guarantee | 5 years |
| Awards & accreditations | 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 | 26cm |
| Small Double | 120cm | 190cm | 26cm |
| Double | 135cm | 190cm | 26cm |
| European Double | 140cm | 200cm | 26cm |
| King Size | 150cm | 200cm | 26cm |
| European King Size | 160cm | 200cm | 26cm |
| Superking | 180cm | 200cm | 26cm |
| Superking Zip and Link | 180cm | 200cm | 26cm |
| Emperor | 200cm | 200cm | 26cm |
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 Free upgrade for Double, European Double, King Size, European King Size, Superking, Superking Zip and Link and Emperor to your room of choice | 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 Free upgrade for Double, European Double, King Size, European King Size, Superking, Superking Zip and Link and Emperor | £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.
Mon-Sat: 9:30am - 5:30pm
Sunday: 10am - 4pm
Mon-Sat: 09:30am - 17:30pm
Sunday: Closed
customerservice@mattressonline.co.uk