Sealy Arden Elevate Ultra Posturepedic Single Mattress
The Sealy Arden Elevate Ultra Posturepedic Mattress is available in UK Single, UK Double, UK King and UK Super King.
- Allergy UK approved cover
- Supportive edge-to-edge perimeter
- Handcrafted in the UK
£1,169
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Sealy Arden Elevate Ultra Posturepedic Mattress
More available sizes
Mattress details
Mattress
Sealy Arden Elevate Ultra Posturepedic Mattress
Size
Firmness
Medium
Construction
Depth (cm)
Layers
7
Layer Details
Damask cover
A knitted damask cover treated with SmarTex and ProShield to manage heat, moisture and allergens. It helps keep the surface comfortable and suits sleepers who want a hypoallergenic cover.
MemorySense ComfortCore
A specialist support layer for the lumbar region. It is there to support the middle of your body, where your weight sits deepest.
GelTex layer
A deep GelTex comfort layer sits beneath. It adds cushioning between the surface and the support below.
Firm foam
A supportive, durable firm foam layer. It adds stability and helps the comfort layers above keep their shape.
AlignSupport coil springs
Sealy's AlignSupport spring system, built to provide support and posture. It forms the main support under the foam layers.
UniCased XT surround
A wall that runs round the full perimeter of the mattress. It gives edge-to-edge support, so you can use more of the surface.
BasePlank support
The foundation layer of the Arden. It gives the springs and foam above a solid base to work from.
Layer details from mattressonline.co.uk and mynextmattress.co.uk product pages, October 2026.
Key benefits
- Fits almost any bedroom: At 90cm wide it slots into rooms that would struggle with anything larger; we suggest allowing at least 2.1m x 2.8m of floor space.
- Leaves room for everything else: In a child's room the bed has to share space with a wardrobe, a desk and toy storage, and the UK single is the size that makes that possible.
- Full adult length: The UK single and the UK double are the same length, so a solo adult isn't giving up legroom by choosing the narrower bed.
- Bedding is cheap and easy: Single sheets and a standard single duvet (135 x 200cm) fit, and both are stocked almost everywhere at the lowest prices of any size.
- A practical guest bed: For a spare room that doubles as an office, or a guest room taking two beds rather than one, the UK single keeps the floor usable.
This size suits you if...
You're buying for a child or teenager, you sleep alone and don't want to pay for width you won't use, or you're furnishing a guest room, student room or first flat where the frame is a fixed 90 x 190cm and the mattress is up to you.
Consider another size if...
You share the bed, or you're a solo adult who spreads out and has the floor space for something wider. We'd recommend the UK double instead: it's 45cm wider, the same length, and we suggest allowing at least 2.6m x 2.8m for it.
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FAQ's
Is the Sealy Arden Elevate Ultra in a UK single big enough for an adult?
For one adult, usually yes. The UK single is the standard one-person size in this country, and at 190cm long it matches the UK double for length, so you're only trading width. If you tend to sprawl, or the bed will be shared even occasionally, the UK double is the safer choice.
Will the UK single Sealy Arden Elevate Ultra fit in a small bedroom?
Almost certainly. We suggest allowing at least 2.1m x 2.8m of floor space for a UK single, which is the smallest footprint of any standard adult size. That makes it a sensible pick for box rooms, loft conversions where the bed sits under a slope, and spare rooms that also work as an office.
How much smaller is the UK single than the UK double?
The UK single is 45cm narrower than the UK double, and the two are exactly the same length. In practice that means a solo sleeper loses no legroom by choosing the UK single, while a couple gains a significant amount of shared width by moving up to the UK double.
Will this mattress fit a bunk bed or mid sleeper?
The footprint will: at 90 x 190cm it matches standard UK bunk and mid-sleeper frames. Depth is the thing to check, because raised frames set a maximum mattress height for the guard rail to work. Sealy doesn't publish a depth for this mattress, so confirm it with the retailer before you buy.
Are two UK singles better than one bigger bed for a guest room?
Often, yes. Two UK singles suit a room that hosts friends, siblings or grandchildren who'd rather not share, and they can be pushed together for couples. Measure carefully though: you'll need a walkway between or beside the beds, on top of the footprint each 90 x 190cm mattress takes up.