Sealy Posturepedic Elevate Ultra Arden Memory Single Mattress
The Sealy Posturepedic Elevate Ultra Arden is a 30cm deep hybrid that pairs memory foam with Sealy's AlignSupport coil springs, which means you get the cushioned, cradling feel of foam with more responsive support underneath than an all-foam design.
- Memory foam without the sunken feel
- Cover draws heat & moisture away
- Allergy UK approved
£984
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Sealy Posturepedic Elevate Ultra Arden Memory Mattress
More available sizes
Mattress details
Mattress
Sealy Posturepedic Elevate Ultra Arden Memory Mattress
Size
Firmness
Medium Firm
Construction
Memory Foam
Depth (cm)
30
Layers
5
Layer Details
Knitted cover
A soft knitted cover treated with SmarTex fibres, which draw heat and moisture away while regulating body temperature. It also carries a ProShield treatment to fight allergens, useful if dust or dander tends to set you off.
InfiniLux foam
A high density foam layer designed for long-lasting comfort, which means it should resist softening and sagging over time. It cushions your body while staying responsive rather than letting you sink.
MemorySense ComfortCore
A memory foam layer that gives extra support around the curve of your back. In practice, this is where the pressure relief for your back and hips comes from.
Reflex foam
A soft, flexible foam that supports spinal alignment. It acts as a transition between the memory foam above and the springs below, so you feel supported rather than perched.
AlignSupport coil springs
Sealy's Posturepedic spring system senses and responds to your body weight to keep the spine aligned. The springs are twice tempered, which means they're heat-treated to hold their responsiveness for longer.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Fits a compact room: At 90cm wide it leaves space for a desk, wardrobe and toy storage, which matters in a child's bedroom where the bed competes for every inch.
- Grown-up support for growing sleepers: The AlignSupport springs respond to body weight, so a light teenager gets proper spinal alignment rather than a mattress built only for adult frames.
- Sensible for a spare room that earns two uses: A single tucks against a wall in a room doubling as an office, and guests still get memory foam comfort rather than a token bed.
- Cooler than memory foam's reputation: The SmarTex knitted cover draws heat and moisture away, a genuine help for teenagers who run warm at night.
- Allergy credentials in a child's size: The ProShield treatment and Allergy UK approval make this single a reasonable pick if dust or dander sets off a young sleeper.
This size suits you if...
You're buying for one sleeper: a child moving up from a first bed, a teenager who needs proper support through growth spurts, or an adult furnishing a spare room or first flat where floor space is tight. It also suits a guest room set up with two beds rather than one, since a pair of singles gives visiting couples or siblings flexibility a double can't.
Consider another size if...
You're an adult who wants room to spread out, or two of you will share the bed even occasionally. We'd recommend the UK double instead, and allow at least 2.6m x 2.8m of floor space for it.
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FAQ's
Is the Sealy Arden UK single big enough for an adult?
For one adult, yes, though it's snug. The UK single is 90cm wide and 190cm long, the standard one-person size, and taller adults should note that the UK king and UK super king are 10cm longer. For everyday adult use we'd lean towards the UK double; for a guest room or a compact flat, the single does the job.
Will the Sealy Arden single fit a bunk or mid sleeper frame?
The footprint matches, since bunks and mid sleepers take standard 90 x 190cm mattresses. Depth is the catch: at 30cm this is a tall mattress, and many raised frames specify a maximum so the safety rail still sits high enough above the sleeping surface. Check your frame's guidance before buying, particularly for a top bunk.
What room size do I need for a UK single mattress?
We suggest at least 2.1m x 2.8m of floor space, the smallest allowance of any UK size. That makes this the practical choice for a box room, a loft conversion where the bed sits under the slope, or a shared children's room where two beds and a walkway have to coexist.
Is the Sealy Arden in a UK single a good choice for a teenager?
It's a strong fit, if a considered spend. The medium firm feel and responsive springs support a growing spine better than a soft budget foam would, and the cover's heat-wicking fibres help teens who sleep warm. The Allergy UK approval is a bonus. It should comfortably outlast the teenage years, which softens the outlay.
Is the UK single the same length as the UK double?
Yes, both are 190cm long; the UK single is 45cm narrower than the UK double. So sizing up buys width for a shared bed rather than extra legroom. If length is the concern, the UK king and UK super king run 10cm longer than the UK single. Compare the retailers listed on this page for current single prices.