Sealy Alston Gel Advantage Pillow Top Mattress
up to
35% off
Free delivery
Comfort trial
Comfort fillings
Firmness rating
Support system
Experience cosy comfort like no other with the Alston Gel Pillowtop Advantage Mattress by Sealy! Featuring a breathable, pressure-relieving layer of Geltex and a quilted pillow top.
Reasons to Buy
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.
For a cooler night's sleep, Geltex is the perfect option. Supremely breathable, this foam layer reduces overheating because of its open-cell structure.
An additional layer of comfort for a more luxurious 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.
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.
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.
Not too soft, not too firm - the perfect balance
About 11.4 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.
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!
Stitched into the mattress border, turning handles are there for easier moving and turning. When caring for your mattress, simply use the handles provided for ease of use.
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
Description
Comfort made simple with the Sealy Alston Pillowtop Advantage Mattress! With cooling gel properties and Sealy's unique spring system, you can drift off to sleep in dream-like comfort.
Top-rated!
Here at Mattress Online, we've given this mattress our own stamp of approval as it's one of our Top Picks for 2025! We're confident you'll love this mattress and everything it has to offer, so why not treat yourself today.
Geltex layer
This mattress features a breathable layer of Geltex. This clever mix of gel and foam adapts to your body throughout the night to encourage a comfortable rest. The flexible and spring-back structure of Geltex helps it respond to your body movements and equally distributes your weight. Smartly reducing built up pressure and helping to better align your spine for a rejuvenating slumber. Highly breathable, Geltex operates with an open cell structure that allows greater airflow within the mattress, promoting a fresher feel.
Cosy support
Sealy's exclusive PostureTech Core Support spring system gives you the support you crave. The bespoke springs have a unique design that provides long-lasting, deep-down support. They react to your body weight and movement for targeted support where you need it most.
This mattress has a medium firmness. Get all the support you need without compromising on the cosy comfort we all enjoy!
If this firmness isn't for you, check out the Claremont Memory Advantage Mattress by Sealy for a firmer feel.
Improved durability
Along the edge of this mattress is Sealy's smart Edge Guard technology. Formed with high-density foam that is placed around the border of the mattress. It works to extend the sleep surface whilst improving the durability of the mattress. The Edge Guard technology sits alongside the spring system to provide greater stability to the whole mattress.
A win for the environment
Great news! This mattress is 100% recyclable at the end of its life. So, you will never have to worry that this mattress will end up in a landfill. The Alston also comes with a 5 Year Guarantee , Sealy has got you covered during this period.
Benefits
- A Top Pick for 2025!
- Exclusive PostureTech Core Support spring system supports the heaviest parts of your body
- Geltex foam layer offers soothing pressure relief and a breathable structure for a fresher feel
- Innovative Edge Guard technology offers improved stability and durability
- Sumptuously medium feel
- Cosy pillow top for extra soft comfort
- Quilted, knitted cover for a smooth surface for a luxurious feel
- Say no more to an undisturbed sleep!
- 100% recyclable at the end of its life!
- Depth: 29cm
- Made in the UK
- 5 Year Guarantee
Weights: Single: 18kg, Small Double: 24kg, Double: 27kg, King Size: 32kg, Superking: 38kg, Superking Zip and Link: 38kg
60-Night Comfort Trial
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.
Specification
| Firmness | Medium |
| Comfort fillings | Geltex |
| Support system | PostureTech Core Support Springs |
| Edge support | Yes |
| Cover | Knitted cover |
| Finish | Pillow top |
| Pressure relief | Yes |
| Turning handles | 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 |
Dimensions
| Size | Width | Length | Depth |
|---|---|---|---|
| Single | 90cm | 190cm | 29cm |
| Small Double | 120cm | 190cm | 29cm |
| Double | 135cm | 190cm | 29cm |
| King Size | 150cm | 200cm | 29cm |
| Superking | 180cm | 200cm | 29cm |
| Superking Zip and Link | 180cm | 200cm | 29cm |
Please allow for a tolerance of +/- 2cm
Delivery
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 Small Double, Double, King Size, Superking and Superking Zip and Link 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 Small Double, Double, King Size, Superking and Superking Zip and Link | £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.
Reviews
Customer Reviews Summary
A balanced snapshot of what customers love (and what they don't), generated by AI.
JulianThis is a good mattress
Verified Purchase
JackieExcellent, so comfortable. Smell took.about 4 weeks to disperse but fine now..
Verified Purchase
JanExcellent.
Verified Purchase
Mrs HansenVery pleased with this comfy mattress. This is the second time I have bought from Mattressonline. Great service.
Verified Purchase
Mr. CleggI like the firm sides. I have only had it about one month but so far it is much better than what it replaced. I've had to buy deeper fitted bottom sheets so if you are going to buy one just check your bottom sheets.
Verified Purchase
CarolMattress is really comfortable. Great value for money. Really easy to order. The delivery companys men were the only let down would not take to the bedroom just left in hallway. They didn’t even speak.
Verified Purchase
VictoriaVery comfy mattress. Quite firm but we’re really pleased with it
Verified Purchase
HarminderExcellent comfortable mattress at a good price Shopping experience was simple and effortless and good communication from Mattress Online retailer
Verified Purchase
MargaretOrdering was easy. Price very competitive. Delivery was well organised and I was kept informed throughout. Mattress was of excellent quality at a great price.
Verified Purchase
FloraIt's so comfort, but it will bounce back when someone is moving next to you.
Verified Purchase
1
Sales Enquiries
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Sunday: 10am - 4pm
Customer Service
Mon-Sat: 09:30am - 17:30pm
Sunday: Closed
customerservice@mattressonline.co.uk
