Spring King Premier Mattress
The Spring King Premier is a hybrid mattress with a medium feel, pairing an open coil spring system with a layer of reflex foam that cushions your body's curves.
- Even support across your whole body
- Hypoallergenic & 100% vegan
- Well suited to guest rooms
£129
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At 22cm deep, the Spring King Premier sits firmly at the budget end, which means it suits spare rooms, guest beds and first flats rather than buyers wanting deep, plush comfort. The knitted cover is breathable, so it helps keep your temperature steady overnight. It arrives rolled and vacuum packed with free next day delivery to mainland UK, expanding within 48 hours. Yes, the 1-year guarantee is short, but at an affordable starting price the trade-off is easier to accept.
Mattress specifications
Firmness
Medium
Type
Hybrid
Depth (cm)
22
Number of Layers
3
Trial Period (nights)
Warranty (years)
1
Price Range
£129 to £199
Best Sleeping Position(s)
Side Sleeping
Back Sleeping
Combination Sleeping
Certifications
BS 7177
Assessed from Spring King's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Choose the Premier if you want a straightforward, affordable hybrid without the overwhelm of a long spec sheet. The open coil springs use high-tensile steel joined in a lattice, which means support spreads across your whole body rather than sinking in one spot. Reflex foam above adds a little contouring at the shoulders and hips. It carries hypoallergenic and 100% vegan credentials, plus Fire Resistant Low Hazard certification to the BS7177: 2008 standard, reassuring if allergies or ethics matter to you. Available in UK Single to UK King sizes, it is a sensible pick for guest rooms or tight budgets, although committed side sleepers may want something softer and deeper.
Key features & layer details
Knitted Cover
A soft knitted cover that breathes well, which means heat is less likely to build up around you overnight. It should help keep your temperature fairly even until morning.
Reflex Foam
A generous layer of reflex foam that contours to your shape, cushioning your frame at every curve. You feel this as gentle give at pressure points rather than a deep sink.
Open Coil Springs
An open coil system made from high-tensile steel joined in a lattice shape, giving medium tension support across your whole body. Open coils move together as one unit, so expect a slightly bouncier, more connected feel than pocket springs.
Layer details from mattressnextday.co.uk product page, September 2026.
Best suited for?
Guest rooms
Spare rooms suit this mattress because the straightforward hybrid build and medium feel are comfortable for most visitors without needing a long spec sheet.
Budget buyers
Sitting at the affordable end, this hybrid gives you reflex foam over open coil springs, so a tight budget still gets a supportive, familiar feel.
Allergy sufferers
The hypoallergenic credentials mean this mattress is a reassuring choice if allergies are a concern when choosing what you sleep on.
Warm sleepers
The breathable knitted cover lets heat escape, which means you are less likely to feel it building up around you overnight.
Eco-conscious buyers
Its 100% vegan credentials will appeal if ethics matter to you, with no animal-derived materials in the build.
Couples who share a bed may notice movement transferring across the open coil springs, and there is no UK Super King size. Lightweight side sleepers could find the medium feel slightly firm. If you want a long guarantee, the 1-year cover here is brief.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Spring King Premier Mattress
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FAQ's
How firm is the Spring King Premier mattress?
It has a medium feel. The open coil springs give medium tension support while the reflex foam layer adds cushioning, which means it suits most back and combination sleepers. Some owners describe it as slightly firmer than expected, so very light side sleepers may prefer something softer.
How deep is the Spring King Premier mattress?
It is 22cm deep, which is on the shallower side. Standard fitted sheets will fit easily, but if you like a tall, hotel-style profile this may feel a little slim.
What sizes does the Spring King Premier come in?
Four UK sizes: Single, Small Double, Double and King. There is no Super King option.
Is the Spring King Premier mattress vegan?
Yes, it is made from 100% vegan materials. It is also hypoallergenic and certified Fire Resistant, Low Hazard, to the BS7177: 2008 standard.
How is the Spring King Premier delivered?
It arrives rolled and vacuum packed, with free next day delivery available to mainland UK. Once unrolled it expands fully within 48 hours, so plan to leave it a couple of days before judging the feel.
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