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The Eclipse is a medium firm adjustable bed mattress from Adjust-A-Bed, designed and handmade in Great Britain and built specifically for use with an adjustable base. It's constructed around 1500 individually pocketed springs with a soft white fibre layer and foam-encapsulated edges, finished with a dual-sided cover - a cooling Summer side and a Tencel-quilted Winter side - so it can be turned seasonally for year-round comfort. The result is a supportive, medium firm mattress that suits sleepers who change position through the night and want their mattress to adapt to warmer and colder months.
A 1500-pocket-sprung adjustable bed mattress with a dual-sided, seasonal-turn cover, best suited to sleepers who want medium firm, adaptable support, effective year-round temperature regulation, and consistent support through every base position.
Medium Firm Feel - 4/6: A supportive feel with added stability. Ideal for people who change sleeping position during the night and need a balance of comfort and support.
Best for
Not ideal for
1500 Pocket Spring System
What it is: 1500 individually wrapped springs. The upper part of each spring shapes to the body's contours while the lower part absorbs changes in weight distribution.
How it helps you sleep: Springs work independently to avoid rolling together, providing tailored support with minimal motion transfer between sleeping partners.
White Fibre Layer
What it is: A dust-free white fibre filling, formed into a deep layer beneath the cover.
How it helps you sleep: Adds softness and resilience to the sleeping surface, while helping keep the mattress fresh and hygienic.
Foam Encapsulated Edges
What it is: A high-density foam strip placed inside the edge of the mattress springs.
How it helps you sleep: Prevents the mattress sagging at the edge, giving a more supportive sleeping area and more usable edge-to-edge space.
Summer Side Cover
What it is: An ultra-cooling fabric on one face of the mattress.
How it helps you sleep: Helps regulate your temperature during warmer months for a more comfortable night's sleep.
Winter Side Cover
What it is: A Tencel quilted top fabric on the reverse face of the mattress.
How it helps you sleep: Provides extra temperature control to keep you warm on colder evenings.
Seasonal Turn Technology
What it is: A dual-sided design that lets you turn the mattress to switch between the Summer and Winter covers.
How it helps you sleep: Keeps you at a comfortable sleeping temperature all year round, simply by turning the mattress in line with the seasons.
| FEATURE | DETAIL |
|---|---|
| Brand | Adjust-A-Bed |
| Category | Mattress |
| Model | Eclipse |
| Firmness | Medium Firm (4/6) |
| Mattress Type | Pocket spring and fibre, dual-sided seasonal turn |
| Foam Free | No |
| Spring System | 1500 Pocket Springs (no proprietary system name given by manufacturer) |
| Spring Count | 1500 |
| Comfort Layers | White fibre layer |
| Cover Material | Summer side - ultra-cooling fabric (no proprietary name given). Winter side - Tencel Quilted Top Fabric. |
| Edge Support | Yes - foam-encapsulated edges |
| Temperature Regulation | Yes - dual-sided cover with a dedicated cooling Summer side and a warming, Tencel-quilted Winter side |
| Care Instructions | Turn seasonally to switch between the Summer and Winter sides |
| Single or Double Sided | Double sided - turn seasonally between Summer and Winter covers |
| Compatible Bed Bases | Adjustable bases only |
| Country of Manufacture | Great Britain |
| Maximum Weight Per Side | 25 stone (158kg) per side |
| Guarantee | 5 years |
| Ideal For | Combination sleepers, back sleepers, front sleepers, hot sleepers, cold sleepers |
| Fire resistance | All mattresses are BS7177:2008 compliant |
| SIZE | WIDTH x LENGTH x DEPTH | CONFIGURATION |
|---|---|---|
| Adjustable Small Single | 75cm (2ft6) x 200cm (6ft6) x 25cm (9.8'') | Single piece |
| Adjustable Single | 90cm (3ft) x 200cm (6ft6) x 25cm (9.8'') | Single piece |
| Adjustable Small Double | 120cm (4ft) x 200cm (6ft6) x 25cm (9.8'') | Single piece |
| Adjustable Double | 135cm (4ft6) x 200cm (6ft6) x 25cm (9.8'') | Single piece |
| Adjustable King Size | 2 x 75cm (2ft6) x 200cm (6ft6) x 25cm (9.8'') | Split design - 2 mattresses |
| Adjustable Super King Size | 2 x 90cm (3ft) x 200cm (6ft6) x 25cm (9.8'') | Split design - 2 mattresses |
Vs firmer adjustable mattresses: The Eclipse's pocket springs and white fibre layer give noticeably more cushioning at the shoulders and hips than a firmer, foam-only option. If you sleep on your side, change position through the night, or run hot or cold at different times of year, this is likely the better choice. A firmer adjustable mattress suits back or front sleepers, heavier sleepers, or those with specific orthopaedic support needs who prefer minimal sink.
Vs softer adjustable mattresses: The Eclipse has more structural support underneath its comfort layers thanks to the 1500 pocket springs and foam-encapsulated edges. A softer mattress can feel more immediately plush, but won't offer the same dual-sided, seasonal-turn temperature regulation as the Eclipse.
Vs buying with a base: This mattress is also available together with a matching Adjust-A-Bed adjustable base - useful if you are buying your first adjustable bed and want guaranteed compatibility between base and mattress. If you already have a compatible adjustable base and simply want to upgrade the mattress, this mattress-only option lets you do that without replacing the whole bed. The paired bed and base listing can be found here.
The Eclipse is backed by Adjust-A-Bed's 5-year manufacturer's guarantee against defects in materials and workmanship. Given the pocket spring, fibre, and dual-sided cover construction, this is a mattress built for consistent, adaptable comfort over time, and the guarantee reflects that.
The Eclipse delivers medium firm, adaptable support with 1500 pocket springs and a dual-sided Summer/Winter cover, designed and handmade in Great Britain and backed by a 5-year guarantee. If you change position through the night, run hot or cold at different times of year, or simply want a mattress that adapts with the seasons, this is one to consider.
Not sure which Adjust-A-Bed mattress is right for you? See our Adjustable Bed Buying Guide for guidance on tension, base compatibility, and comfort levels.
| WHAT'S INCLUDED? | |
|---|---|
| Mattress | Yes |
| Base | No |
| Headboard | No |
PLEASE NOTE:
All measurements are approximate and are subject to a tolerance of + or - 2cm.
Image is for illustration purposes only.
Pillows, cushions, throws and bed dressings not included.
Is this mattress suitable for an adjustable bed?
Yes this mattress is designed to be used on an adjustable bed.
What is the depth of this mattress?
This mattress is 25cm deep.
How does an adjustable bed mattress differ from a regular mattress?
An adjustable mattress is designed to flex and contour to different positions when used with an adjustable frame which allows for customised comfort and support. A regular mattress is designed to lay flat and cannot be bent.
Can I sleep on this mattress straight away?
Yes, you can sleep on your mattress straight away.
Will this mattress make me hot?
This product has properties that help wick away moisture allowing air to circulate through the mattress. Therefore in most situations this mattress won't cause excessive heat.
Made to measure mattresses and divan bases are available – please call 01928 242829.
Our experienced delivery team can take away your old bed or mattress when delivering your new one. Please ensure you have dismantled your old bed prior to delivery.
Simply add this service to your order at checkout.
What products will you remove?
We will remove mattresses, divan beds and bed frames (subject to all beds being dismantled first). Add this convenient service to your order at checkout.
Do I need to dismantle my old bed before collection?
Yes, your old bed must be fully dismantled.
Can I add Removal and Recycle on after placing my order?
You can either add it to your order on the basket page and pay at checkout, or if you would like to add it after you have checked out, simply contact us on 01928 242829 before your order is due for delivery.
Do you recycle the beds and mattresses you collect?
When we remove your old bed or mattress, we ensure that it is disposed of in an environmentally responsible way. All products are sent to The Furniture Recycling Company, the UK's largest and most trusted furniture recyclers.
Our skilled drivers deliver throughout the UK and will deliver straight to your home. Free doorstep delivery is available on many products and you can also choose delivery to room of choice for an additional fee.
How much is delivery?
We offer free delivery to most of the mainland UK for orders over £100; there are applicable charges for deliveries to the highlands or far out UK, which can be found by putting your postcode into the delivery section on the product page. For orders under £100, there is a £10 charge.
How long does delivery take?
Once you select the required product, an approximate delivery time will be quoted on the product page before adding the item to your basket. During checkout, you will either be given the option to select your date, or we will state an estimated time for delivery. Once you have placed your order, we will contact you to book a date within the timeframe quoted.
Will I be contacted beforehand to arrange a delivery slot?
Once you have placed an order, our delivery team will contact you directly to arrange a suitable delivery slot, either via email, call, or text message.
Can I choose my delivery day?
If the product is available for next-day delivery, you can select a date at checkout. For all other products, you will be presented with an estimated timeframe for delivery. After placing your order, our delivery team will contact you via e-mail, text or call to arrange a suitable delivery day/time.
Read all our Delivery FAQs
We have an easy returns policy: If you change your mind, we're happy to accept returns within 14 days of you receiving your product, as long as they are unused and unassembled. However, for hygiene reasons, we can't take back products that have been slept on, unless there's a fault.
Custom-made products can only be returned if they are faulty.
Please take a look at our Terms & Conditions.
Can I return a mattress I've slept on?
Normally, mattresses can only be returned if they're unused within 14 days. But if your mattress has a trial period, please refer to the mattress trial information page for further details.
How long do I have to return an item I've purchased online?
You have 14 days to return an item if bought online, subject to the item not being used or assembled. Please note, if you wish to inspect a mattress, please ensure the protective outer plastic packaging is not removed, as this may affect your right to return due to health and hygiene reasons. Any product that is made to order/customised cannot be returned unless faulty.
Do I have to pay for the return?
To return your product, you can either arrange the return yourself, or we can happily arrange it on your behalf for a charge, which will be deducted from your refund. The collection charge covers the expenses involved in picking up the item from your location and safely bringing it back to our warehouse. For bedding items, the amount is £20, and for large/bulky items, charges start from £95 (depending on the product/postcode).
Can I return a part or fully assembled item?
Unfortunately, once an item is assembled, whether partially or fully, we can't accept returns unless the item is faulty.
Read all our Returns FAQs
Our skilled drivers deliver throughout the UK and will deliver straight to your home. Free doorstep delivery is available on many products and you can also choose delivery to room of choice for an additional fee.
How much is delivery?
We offer free delivery to most of the mainland UK for orders over £100; there are applicable charges for deliveries to the highlands or far out UK, which can be found by putting your postcode into the delivery section on the product page. For orders under £100, there is a £10 charge.
How long does delivery take?
Once you select the required product, an approximate delivery time will be quoted on the product page before adding the item to your basket. During checkout, you will either be given the option to select your date, or we will state an estimated time for delivery. Once you have placed your order, we will contact you to book a date within the timeframe quoted.
Will I be contacted beforehand to arrange a delivery slot?
Once you have placed an order, our delivery team will contact you directly to arrange a suitable delivery slot, either via email, call, or text message.
Can I choose my delivery day?
If the product is available for next-day delivery, you can select a date at checkout. For all other products, you will be presented with an estimated timeframe for delivery. After placing your order, our delivery team will contact you via e-mail, text or call to arrange a suitable delivery day/time.
Read all our Delivery FAQs
We have an easy returns policy: If you change your mind, we're happy to accept returns within 14 days of you receiving your product, as long as they are unused and unassembled. However, for hygiene reasons, we can't take back products that have been slept on, unless there's a fault.
Custom-made products can only be returned if they are faulty.
Please take a look at our Terms & Conditions.
Can I return a mattress I've slept on?
Normally, mattresses can only be returned if they're unused within 14 days. But if your mattress has a trial period, please refer to the mattress trial information page for further details.
How long do I have to return an item I've purchased online?
You have 14 days to return an item if bought online, subject to the item not being used or assembled. Please note, if you wish to inspect a mattress, please ensure the protective outer plastic packaging is not removed, as this may affect your right to return due to health and hygiene reasons. Any product that is made to order/customised cannot be returned unless faulty.
Do I have to pay for the return?
To return your product, you can either arrange the return yourself, or we can happily arrange it on your behalf for a charge, which will be deducted from your refund. The collection charge covers the expenses involved in picking up the item from your location and safely bringing it back to our warehouse. For bedding items, the amount is £20, and for large/bulky items, charges start from £95 (depending on the product/postcode).
Can I return a part or fully assembled item?
Unfortunately, once an item is assembled, whether partially or fully, we can't accept returns unless the item is faulty.
Read all our Returns FAQs
