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Comfort trial

Comfort fillings
Firmness rating

Support system
Experience a deep restful sleep with the Sealy Alford. Designed with unique PostureTech Core Support coil springs, offering deep-down targeted support.

An innovative spring design from the specialists at Sealy that uses unique shapes and varied tension to provide excellent full-body support and pressure relief.

Offering a soothing night's rest by evenly distributing your body weight across the mattress. The pressure point relief provides the ultimate relaxation needed for a deep slumber.

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.

A sumptuously soft finish that provides additional cosiness and warmth. Knitted covers enhance airflow and are incredibly breathable. So, you can enjoy a cooler snooze.

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!
Firmer and more supportive

About 9.4 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

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
Fall into a heavenly sleep with the Sealy Alford Advantage Mattress. Designed with support that has got your back!
Exclusive to Mattress Online, you won't find a mattress like this anywhere else!
The Sealy spring
In the core of this mattress is Sealy's very own PostureTech Core Support coil spring system. These springs are designed to gradually get firmer the longer you lay on the mattress. Providing support that targets pressure points deep down, relieving aches and pains.
Plush fillings
This mattress is topped off with plush fillings made of synthetic fibres. These fibres cushion the hardest parts of your body, like your hips and shoulders, to provide you with the perfect amount of relaxation. The sumptuous filling layer provides the comfort that's needed for a dream-worthy sleep.
A sturdy feel
The Alford has a sturdy, firm feel. So, you'll always get the support you need. A firmer mattress is ideal for people who have back problems or if you need extra support.
If a firm feel isn't for you, why don't you check out the Sealy Waltham Latex Advantage Mattress for a medium feel.
Simple care
This mattress is single-sided so you will never have to flip it. To care, simply rotate the mattress top to toe every month. This helps to reduce the settlement of the fillings.
Sustainability first
No need to worry. The Alford Advantage is 100% recyclable at the end of its use. No part of this mattress goes to landfill so you can rest easy and buy with confidence. To top it off, it comes with a 5 Year Guarantee, Sealy has got you covered during this period.
Weights: Single: 16.5kg, Double: 24kg, King Size: 28kg, Superking: 33kg
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 | Soft White Fibres |
| Support system | PostureTech Core Support Springs |
| Cover | Knitted cover |
| Pressure relief | 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 | Sealy Product Care and Guarantee |
| Size | Width | Length | Depth |
|---|---|---|---|
| Single | 90cm | 190cm | 24cm |
| Double | 135cm | 190cm | 24cm |
| King Size | 150cm | 200cm | 24cm |
| Superking | 180cm | 200cm | 24cm |
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 and Superking 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 and Superking | £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.
Good mattress for the price.
Verified Purchase
So far it is really great. It is really firm and comfortable. Back pain is released.
Verified Purchase
Really comfortable and good value
Verified Purchase
Great matress, good nights sleep.
Verified Purchase
Excellent Delivery and Service
Verified Purchase
Mattress is a firm one as stated. Great value for the price.
Verified Purchase
Deep mattress firmness giving comfort. Worth the money with excellent delivery service.
Verified Purchase
Great product so far. Hopefully it'll keep being great
Verified Purchase
It's the best mattress I've ever had. Fast delivery.
Verified Purchase
Quick delivery removed old mattress
Verified Purchase
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customerservice@mattressonline.co.uk