Silentnight UltraGel 3000 Mirapocket Box Top Firmer Mattress

Pocket springs are of considerable better quality than their poorer traditional open coil counterparts. Put simply, pocket spring contours better and supports better than other base layers. When it comes to pocket spring mattresses, the general rule of thumb is that the more springs the better. There are exceptions, of course, but for the best part this is likely to be a good quality mattress based on it's base layer.

Traditional memory foam has one critical pitfall around heat retention and buildup. See, the foam absorbs heat and is not particularly breathable meaning that it can cause many people to get too warm as they sleep. Cooling geltex foam is different however featuring all the positives of traditional memory foam but without the pitfalls of heat build up. It's a great option for those who find comfort in the foam.

Traditional memory foam has one critical pitfall around heat retention and buildup. See, the foam absorbs heat and is not particularly breathable meaning that it can cause many people to get too warm as they sleep. Cooling geltex foam is different however featuring all the positives of traditional memory foam but without the pitfalls of heat build up. It's a great option for those who find comfort in the foam.

A single sided mattress is typical for the industry and relates to how  a mattress has the comfort layer on one side of the mattress. only This means that the mattress only needs to be rotated rather than flipped. The benefit of single sided mattresses is that they require less upkeep in that there's no flipping, but also, there's less components involved in the creation which saves costs.

Hand Tufting is a labor intensive process that involves securing the fillings to a mattress rather than having them operate independently and loose within. This small act not only secures, but also leads to the mattress lasting longer and feeling firmer. A hand-tufted mattress is great for anyone looking for additional stability while they sleep.

This mattress comes with a quilted cover. Many people overlook the cover as a need for consideration however, the right cover can add additional comfort and in the case of this one here, adds quilted comfort that offers a soft but hard-wearing cover that is both breathable and stylish.

37cm is a fairly substantial depth for a mattress. While a thick mattress is not indicative of greater quality, it's easy to see that a bigger depth gives more room for fillings and good quality spring systems. 

Silentnight's Mirapocket system combines standard pocket springs with smaller pocket springs, per the listing, using individually fabric-wrapped coils that can respond separately to pressure.

Meets BS7177: 2008 for domestic low hazard use. Testing covers resistance to a smouldering cigarette and a small flame the size of a match flame, not suitability for hotels or care homes.

Combining 2000 Mirapocket springs with 1000 Ultraflex mini-springs creates two spring types within the mattress, claimed to improve comfort and support through their combined response.

Vegan-friendly is the brand's label for a mattress made without animal-derived materials such as wool or silk, and it leaves out what replaces them and whether anyone has certified it.

An additional padded top layer forms the sleeping surface, while the single-sided construction means maintenance involves rotation with the pillow top always facing upwards.

Turning handles offer handholds for repositioning the mattress. They are marketed as making movement easier, which matters when manoeuvring a bulky mattress on its base.

Allergy UK endorsement accompanies materials Silentnight calls hypoallergenic, meaning they are intended to limit common allergens within the mattress construction.

Mini pocket springs are small, individually fabric-wrapped springs that compress separately, usually adding cushioning in a comfort layer near the sleeping surface.

At 34cm (about 13.4 inches), mattress thickness affects fitted-sheet depth and bed height, while frame buyers should confirm which part the full dimensions measure.

UK handcrafting is the maker's own claim, while National Bed Federation approval is a membership scheme auditing fire safety, clean fillings and honest labelling.

Handles offer a grip for repositioning. Follow the handling instructions, as these turning handles are not necessarily designed to carry the item's full weight.

Firm on the maker's own rating means less give than its medium, and it tends to appeal to sleepers who like more resistance. Compare within that maker's range.

Allergy UK approval applies here, though the specification leaves out which materials or features it covers, so check the approval details if that matters.

National Bed Federation approval means the maker belongs to a scheme audited on fire safety, clean fillings and honest labelling, not comfort or firmness.

Made in the UK gives the country it was built in and little about quality on its own, so judge the materials, construction and guarantee separately.

Silentnight's Mirapocket system uses separate fabric pockets, with each spring compressing independently to respond to weight in different areas.

Only one side is intended for sleeping. Do not flip it; rotate from head to foot as instructed by the maker to spread wear across the surface.

The materials are pitched as less likely to trigger allergic reactions, so their composition is worth comparing with any known sensitivities.

Sold as fire resistant, not fireproof, with no test standard or testing conditions specified, so keep it away from flames and heat sources.

At 3000 pocket springs, a higher count alone cannot establish comfort, since spring gauge, fillings and layer arrangement also affect feel.

Knitted fabric uses interlocking loops that allow some stretch, so the cover can flex with the cushioning beneath it as pressure changes.

UK handcrafting is the brand's own description, and the share done by hand differs between makers, so weigh the materials alongside it.

Purotex in the cover helps guard against allergens including dust mites, Silentnight says, without removing the need for cleaning.

Geltex is a gel-infused foam used in comfort layers, cushioning the body through compression as weight settles into the mattress.

A five year guarantee comes with it. Check the retailer's terms for the fault criteria and for how to make a claim.

Firm is the brand's rating for a surface pitched as allowing less sinking; firmness scales vary between brands.

With a depth of 37cm, about 14.6 inches, it raises your bed height and needs sufficiently deep fitted sheets.

A pillow top adds an extra padded layer sewn onto the sleeping surface.

A pillow top adds a sewn on padded layer for one sided sleeping.

Five years of guarantee cover come with it.