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Comfort trial

Comfort fillings
Firmness rating

Support system
Unwind in total bliss with the Alpha Delta Premium Mattress. Featuring a pocket sprung core for personalised support and layers of foam and fibre comfort.

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

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.

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.
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.

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 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
The Alpha Delta Premium Mattress is designed to offer lasting comfort and support night after night.
Responsive support
A core of 650 pocket springs, wrapped in individual fabric pockets, adapt to your weight and movement. This responsive feel helps to keep your body in optimal position and align your spine to reduce aches.
Layers of comfort
Multiple layers of foam and fibres create the comfort layer of this mattress. A dense thermobond fibre layer provides a firmer feel. It delivers comfort whilst also helping the mattress retain its shape and stability. An additional layer formed from low density foam enhances the comfort of this mattress.
The 4cm layer of high density soft foam adapts to your unique body shape. Encasing you in total comfort as it lifts weight off your body for soothing pressure relief. So you can wake feeling rejuvenated and ready for the day.
Balanced firmness
Rated medium to firm this mattress offers a balance between firm support and soft comfort. This firmness is the perfect compromise when sharing the bed with a partner.
Zero ‘roll off’ feel
Enjoy a maximised sleep space with the foam encapsulated edge. Sturdy foam blocks are placed around the perimeter of the mattress. This reinforces the border and provides a firmer feel so it does not dip under pressure. So you can sit and sleep right to the edge with zero ‘roll off’ feel.
Convenient design
This mattress is vacuum packed and rolled, making it easy to carry to your room of choice and unpack. Adding to the convenience of this mattress is its single-sided design. You do not have to worry about flipping your mattress, simply rotate top to toe seasonally for even wear.
Peace of mind
Complete with a 10 Year Warranty so you can purchase with absolute confidence.
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 | Medium to firm |
| Comfort fillings | Soft White Fibres |
| Support system | Pocket Springs, Reflex Foam |
| Edge support | Yes |
| Rolled-up | Yes |
| Single-sided | Yes |
| Warranty | 10 years |
| Fire resistance | Conforms to BS7177: 2008, for use at home |
| Size | Width | Length | Depth |
|---|---|---|---|
| Double | 135cm | 190cm | 25cm |
| King Size | 150cm | 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 Free upgrade for King Size 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 King Size | £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