Firmness
Medium Firm
Type
Hybrid
Depth (cm)
Number of Layers
Trial Period (nights)
60
Warranty (years)
Price Range
£719 to £1,297
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Man, captured September 2026, and from regular price comparison across our UK retail partners.
A medium firm feel sits in the range most sleepers get on with, and the hybrid build gives you the responsive support of pocket springs combined with gel material, which is generally used to help with comfort and cooling. The boxtop adds an extra cushioned layer stitched on top, so the initial feel is softer than the support core beneath. Silentnight is a long-established UK name, which offers some reassurance at this price. £719.10 as a starting price is a real investment, but you are paying for a hybrid construction rather than a basic foam or open-coil design. Mattressman lists a 60-night trial, so there is a window to change your mind if you buy there.
Key Features & what's inside
Awaiting up to date specifications. Please check back later.
Who's it NOT for?
If you prefer a genuinely firm, flat sleeping surface, the boxtop's cushioned top may feel softer than you want. It is also worth knowing that boxtop mattresses cannot be flipped, so you can only rotate it. Budget shoppers should note the £719.10 starting price puts it above entry-level options.
Silentnight UltraGel 3000 Pocket Boxtop Medium Firm Mattress
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Is the Silentnight UltraGel 3000 Pocket Boxtop firm or soft?
It is rated medium firm, which suits most sleepers. The boxtop construction adds a cushioned layer on top, so the surface feels a little softer initially than the supportive core beneath it.
What sizes does the Silentnight UltraGel 3000 come in?
Five UK sizes are available: Single, Small Double, Double, King and Super King. Prices range from £719 to £1,297 depending on the size you choose.
Does the Silentnight UltraGel 3000 come with a sleep trial?
Mattressman, the retailer listing this mattress, offers a 60-night trial. This is Mattressman's own offer rather than a Silentnight guarantee, so check the terms if you buy elsewhere.
How quickly can the Silentnight UltraGel 3000 be delivered?
Mattressman lists free next day delivery, with a transit time of 1 to 3 days. As with the trial, this is the retailer's own service, so delivery terms may differ if you buy from another shop.
Can you flip the Silentnight UltraGel 3000 Boxtop mattress?
No. Boxtop mattresses have their comfort layer stitched to one side only, so they are single-sided. You should rotate it regularly instead to help it wear evenly.
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