Sealy Sealy Alston Advantage Mattress

Enjoy balanced comfort and trusted Sealy support with the Sealy Alston Advantage Mattress. Designed with a medium feel and a plush quilted pillow top, this mattress offers the perfect blend of cushioning, stability and cooling comfort for a wide range of sleepers.At the heart of the mattress is Sealy’s PostureTech spring system, engineered to respond to your body weight and provide targeted support where you need it most. This works alongside EdgeGuard support, which reinforces the mattress edge to maximise the usable sleep surface and create a more stable feel from side to side.For added comfort, the Alston Advantage includes Geltex technology, a breathable comfort layer designed to enhance airflow, improve pressure relief and help create a cooler, fresher sleeping environment. The quilted pillow top adds an extra layer of softness, giving the mattress a more luxurious and inviting feel without compromising on support.With a 28cm depth, this single-sided mattress is practical as well as comfortable. It is hypoallergenic, features turning handles for easier rotation, and is made in Britain to Sealy’s trusted standards. Complete with a 5-year guarantee, it is designed to offer dependable comfort night after night.Sealy is one of the most recognised names in sleep, with a long-standing reputation for combining comfort innovation with genuine orthopaedic support. From its PostureTech and Posturepedic heritage to its continued focus on research-led mattress design, Sealy remains a trusted choice for sleepers looking for comfort, quality and lasting support.
Product ID: 27045711
Enjoy balanced comfort and trusted Sealy support with the Sealy Alston Advantage Mattress. Designed with a medium feel and a plush quilted pillow top, this mattress offers the perfect blend of cushioning, stability and cooling comfort for a wide range of sleepers.At the heart of the mattress is Sealy’s PostureTech spring system, engineered to respond to your body weight and provide targeted support where you need it most. This works alongside EdgeGuard support, which reinforces the mattress edge to maximise the usable sleep surface and create a more stable feel from side to side.For added comfort, the Alston Advantage includes Geltex technology, a breathable comfort layer designed to enhance airflow, improve pressure relief and help create a cooler, fresher sleeping environment. The quilted pillow top adds an extra layer of softness, giving the mattress a more luxurious and inviting feel without compromising on support.With a 28cm depth, this single-sided mattress is practical as well as comfortable. It is hypoallergenic, features turning handles for easier rotation, and is made in Britain to Sealy’s trusted standards. Complete with a 5-year guarantee, it is designed to offer dependable comfort night after night.Sealy is one of the most recognised names in sleep, with a long-standing reputation for combining comfort innovation with genuine orthopaedic support. From its PostureTech and Posturepedic heritage to its continued focus on research-led mattress design, Sealy remains a trusted choice for sleepers looking for comfort, quality and lasting support.

Delivery Options

Economy Delivery (UK) — £3.99 Delivered in 4–7 working days.
Standard Delivery (UK) — £4.99 Delivered in 2–4 working days.
Next Day Delivery (UK) — £7.99 Delivered the next working day on selected items. Terms & conditions apply.*

How Next Day Delivery Works

Upgrade your order to Next Day Delivery and receive your item(s) the next working day.
Orders placed by 9pm, Monday to Friday will arrive the next working day.

Scottish Highlands & Northern Ireland postcodes:

Orders placed between 9pm Friday and 2pm Sunday will be delivered on Tuesday if you live in the following areas: AB, BT, DD, EH, EX, FK, G, IV, IoM, KA, KY, ML, PA, PH, PL, TD, TR.
Remote postcodes (two working days): Our Next Day Delivery service takes two working days instead of one for the following postcodes: HS2, KW16–17, PA61–PA75, PA78, PH30, PH41–44, ZE2–3.

Ireland & The Channel Islands:

All orders to Ireland and the Channel Islands are eligible for standard delivery at a fixed fee of £7.95.

Channel Islands: Standard delivery in 3–4 days (£7.95), or Express delivery in 2 days (£9.50).
Republic of Ireland: Delivery within 7–10 days.


Unfortunately, Next Day Delivery is not available to Ireland or the Channel Islands.

Marketplace Items

The BrandAlley Marketplace allows our carefully selected partner sellers to offer you an additional range of products. Marketplace items are clearly labelled on the product page as 'Shipped from our partner'.
These sellers are responsible for managing your order, including shipping, delivery, and customer service.
Delivery timeframes and costs may vary by seller, you'll see the details clearly displayed at checkout before you place your order.
For any questions about your marketplace order, please contact the seller directly via your account.

Items available on pre-order means our suppliers send stock to our warehouse once you've placed your order. Because of this, delivery times can vary from sale to sale.
To see exactly when your item will arrive, please check the estimated delivery date (ETA) shown on the product page, in your basket, and at checkout.
If you order from more than one sale, we'll automatically split your order and ship items separately as they become available, so you receive each piece as soon as possible.

Delivery Options

Economy Delivery (UK) — £3.99 Delivered within 4–7 working days of our warehouse receiving your item from the supplier.
Standard Delivery (UK) — £4.99 Delivered within 2–4 working days of our warehouse receiving your item from the supplier.

Delivery Options

Economy Delivery (UK) — £3.99 Delivered in 4–7 working days.
Standard Delivery (UK) — £4.99 Delivered in 2–4 working days.
Next Day Delivery (UK) — £7.99 Delivered the next working day on selected items. Terms & conditions apply.*

How Next Day Delivery Works

Upgrade your order to Next Day Delivery and receive your item(s) the next working day.
Orders placed by 9pm, Monday to Friday will arrive the next working day.

Scottish Highlands & Northern Ireland postcodes:

Orders placed between 9pm Friday and 2pm Sunday will be delivered on Tuesday if you live in the following areas: AB, BT, DD, EH, EX, FK, G, IV, IoM, KA, KY, ML, PA, PH, PL, TD, TR.
Remote postcodes (two working days): Our Next Day Delivery service takes two working days instead of one for the following postcodes: HS2, KW16–17, PA61–PA75, PA78, PH30, PH41–44, ZE2–3.

Ireland & The Channel Islands:

All orders to Ireland and the Channel Islands are eligible for standard delivery at a fixed fee of £7.95.

Channel Islands: Standard delivery in 3–4 days (£7.95), or Express delivery in 2 days (£9.50).
Republic of Ireland: Delivery within 7–10 days.


Unfortunately, Next Day Delivery is not available to Ireland or the Channel Islands.

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