Silentnight Geltex 3000 Astral Mattress
The Silentnight Geltex 3000 Astral Mattress combines an 11cm Geltex and Ultraflex comfort layer with a dual layer of pocket springs, which means pressure relief on top and a medium-firm feel underneath.
- Medium-firm feel with cushioning on top
- Gel layer helps regulate temperature
- Cover helps guard against dust mites
£881.10
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The Silentnight Geltex 3000 Astral is a 36cm deep pocket spring mattress with a temperature-regulating gel comfort layer and a hand-tufted cover. It's rated medium firm, so it suits sleepers who like a supportive surface with some cushioning on top. It comes in a UK king. Mattress Man offers a 60-night sleep trial, exchanges only, and the mattress has a 5 year guarantee.
Mattress specifications
Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
36
Number of Layers
2
Trial Period (nights)
Warranty (years)
Price Range
£881 to £882
Best Sleeping Position(s)
Back Sleeping
Combination Sleeping
Stomach Sleeping
Certifications
Allergy UK
Assessed from the specification published by beds2go-ek.co.uk, captured October 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The top is an 11cm layer of Geltex and Ultraflex, which gives pressure relief and total body support. Underneath sit 2000 Mirapocket springs and 1000 Ultraflex mini pocket springs in a dual layer, so the support is built in two stages rather than one. The gel comfort layer is temperature-regulating, which helps if you tend to sleep warm. The cover is Purotex-infused to help guard against dust mites, and the mattress is endorsed by Allergy UK. It suits most back sleepers and many side sleepers, although lighter side sleepers may find the medium-firm feel a little unyielding.
Key features & layer details
Geltex comfort layer
An 11cm layer of Geltex and Ultraflex that gives pressure relief and total body support. It cushions your body while the springs below keep you supported.
Pocket spring system
A dual layer of 2000 Mirapocket springs and 1000 Ultraflex mini pocket springs. The two layers work together to give a supportive base beneath the comfort layer.
Layer details from beds2go-ek.co.uk product page, October 2026.
Best suited for?
Back sleepers
The medium-firm feel and dual layer of pocket springs give a supportive base under the Geltex layer, which suits most people who sleep on their back.
Warm sleepers
A temperature-regulating gel comfort layer sits on top of the springs, which helps if you tend to sleep warm.
Allergy sufferers
The Purotex-infused cover helps guard against dust mites, and the mattress is endorsed by Allergy UK, so it suits anyone wanting a more allergy-conscious bed.
Side sleepers
The 11cm Geltex and Ultraflex layer gives pressure relief and cushioning, which works well for many side sleepers who are not on the lighter side.
If you prefer sleeping on a soft mattress, this might not be the best choice. It's rated medium firm, so it gives less sink than a softer model. It's also single-sided, so you can't flip it, only rotate it using the turning handles. Mattress Man's trial is exchanges only, with a fee if you exchange between nights 30 and 60.
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.
Silentnight Geltex 3000 Astral Mattress
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FAQ's
How firm is the Silentnight Geltex 3000 Astral?
It's rated medium firm. That suits back sleepers and many side sleepers who want support with some cushioning, although anyone who likes a soft, sinking feel may find it too firm.
What size does the Silentnight Geltex 3000 Astral come in?
It comes in a UK king, which measures 150 x 200cm. If you need a different size, check that it's available before you commit to this model.
How deep is the Silentnight Geltex 3000 Astral?
It's 36cm deep. That's a fairly tall mattress, so check that your bed frame and bedding suit that depth before you buy.
What is the Silentnight Geltex 3000 Astral made of?
It has an 11cm Geltex and Ultraflex comfort layer on top of a dual layer of 2000 Mirapocket springs and 1000 Ultraflex mini pocket springs. The cover is hand-tufted and Purotex-infused.
Does the Silentnight Geltex 3000 Astral have a trial or guarantee?
It has a 5 year guarantee. Mattress Man offers its own 60-night sleep trial, but it's exchanges only, and there's an exchange fee if you swap between nights 30 and 60.
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