Available 
Luna 4000 Support Gel Memory Pocket Hybrid Mattress
from £266-£677.
£266-£677
Sizes tracked: Single, Small Double, Double, King Size, Super King
Luna Hybrid
Luna 4000 Plush Gel Memory Pocket Hybrid Mattress review
The Luna 4000 Plush Gel Memory Pocket Hybrid Mattress is a soft-to-medium hybrid shortlist for shoppers who want pocket-spring support with a cushioned feel. Compare the size-based pricing, 25cm depth and trial terms before buying.
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Last verified: 2026-07-21
Quick verdict
The Luna 4000 Plush Gel Memory Pocket Hybrid Mattress is a soft-to-medium hybrid with pocket-spring support and foam comfort layers, so it suits shoppers who want cushioning without giving up spring support. It is worth shortlisting if you prefer a softer feel, but the price changes a lot by size, from £262 to £645, so value depends on the variant you choose. Compare it with firmer or more responsive alternatives before you buy.
Available sizes and prices
Luna 4000 Plush Gel Memory Pocket Hybrid Mattress is listed with 5 size options from £262-£645. The visible sizes include Single, Small Double, Double, King Size, so use the table to compare the option that matches the exact size, colour, format or specification you want. Always confirm the final checkout price, delivery charge and stock status on the retailer page.
Key product details
These are the retailer details worth checking first for Luna 4000 Plush Gel Memory Pocket Hybrid Mattress: Brand: Luna; Type: Hybrid; Firmness: Soft; Sizes tracked: Single, Small Double, Double, King Size, Super King. Treat them as a quick fact sheet, then use the retailer page to verify any installation, warranty, delivery or model-number details before buying.
| Brand | Luna |
|---|---|
| Type | Hybrid |
| Firmness | Soft |
| Sizes tracked | Single, Small Double, Double, King Size, Super King |
| Price range | £262-£645 |
| Owner rating signal | 4.6 out of 5 shown; review volume needs checking with the retailer |
| Last checked | 2026-07-21 |
What the product page tells us
Mattress Online lists this Luna mattress as a hybrid with 2000 pocket springs plus 2000 mini springs, a 2cm layer of Luna Fusion Cool Memory Foam, and two 3cm reflex foam layers. The page also shows a 25cm depth, a single-sided build, and rolled/vacuum-packed delivery. It includes a 100-night comfort trial and a 10-year guarantee, so those terms are part of the buying decision as much as the comfort spec.
What the wider review picture suggests
The visible owner review details is 4.6/5 from 109 reviews, which is encouraging context but still retailer-hosted feedback rather than independent lab evidence. The public comments are mostly positive on comfort and value, while some shoppers mention an initial firmness or settling-in period. That points to a mattress that may improve with time for some buyers, but it is worth noting if you want an immediately soft feel.
What to weigh up before you buy
The biggest trade-off is softness versus response: this model leans soft-to-medium, so it should feel more cushioned than a firmer hybrid, but some sleepers may notice more initial sink. At 25cm deep, it is also worth checking frame clearance, fitted sheets and any topper you already use. With tracked prices from £262 to £645, compare the exact size, the 100-night trial and the 10-year guarantee against nearby Luna alternatives before deciding.
Price and value benchmark
At £262 to £645 across the tracked sizes, this mattress sits in a size-sensitive value band rather than a single headline-price buy. The Single starts at £262, while the Super King reaches £645, so the best value depends on whether you need a compact guest-room bed or a larger main-bedroom size. Check the retailer for the latest checkout price and stock, because the chosen size changes the value case more than the model name alone.
How it compares with nearby alternatives
Start with the Luna 4000 Support Gel Memory Pocket Hybrid Mattress if you want a close family comparison with a different feel within the same brand. It is the more direct choice if you want to compare support balance and price in a similar hybrid format. The Luna Memory 1000 Pocket Hybrid Mattress is the lower-priced Luna hybrid to compare if budget matters more than the fuller-spec feel here. In both cases, check the exact size price as well as the construction, because the final cost and comfort fit can change once you move beyond the starting figure.
How much trust to place in the review details
The 4.6/5 rating is useful context, but it should not be treated as proof that the mattress will suit every sleeper. The main review evidence comes from Mattress Online itself, and the publicly visible detail is stronger on general satisfaction than on fully independent performance evidence. That is enough to support a shortlist decision, but not enough to overstate comfort, cooling or long-term performance beyond what the listing and reviews show.
Who this mattress is likely to suit
This mattress looks best suited to shoppers who prefer some cushioning and want spring support plus foam comfort layers in a hybrid format. It should also appeal to buyers comparing soft-to-medium hybrids, especially side sleepers who like a more cushioned surface, and anyone who wants the extra confidence of a 100-night comfort trial before fully committing. If you want a mattress that feels plush rather than firm, the Luna 4000 belongs on your shortlist.
Who should look at something else
Look elsewhere if you want a firmer feel, a clearly different construction, or a mattress that is less likely to feel soft at the outset. Shoppers who dislike settling-in periods may also prefer a model with a more immediate feel, since some visible comments mention initial firmness. It is also less suitable if your budget or required size sits outside the £262 to £645 range shown for the tracked Luna 4000 sizes.
Comfort and support in everyday use
The hybrid design combines pocket springs with gel foam and reflex foam, which usually means spring support underneath a more cushioned upper feel. The 2000 pocket springs plus 2000 mini springs point to a more detailed spring layout than a simple open-coil mattress, while the foam layers explain why the comfort story leans plush. Side sleepers may welcome that softer surface more than back or front sleepers, but feel still comes down to personal preference rather than any medical outcome.
Value check
Value here depends on whether the soft-to-medium feel, 25cm depth, 100-night comfort trial and 10-year guarantee are all things you would actually use. The owner reviews lean positive on comfort and value, which supports the case, but the product is most persuasive when its size, price and feel match your own preference rather than when judged as a generic hybrid. Compared with similar Luna hybrids, the Single at £262 looks like the most accessible entry point, while the larger sizes need a stronger comfort fit to justify the higher spend.
Good alternatives to compare
The closest alternatives to compare with Luna 4000 Plush Gel Memory Pocket Hybrid Mattress include Luna 4000 Support Gel Memory Pocket Hybrid Mattress, Luna Memory 1000 Pocket Hybrid Mattress, Jay-Be Bio Cool Hybrid 2000 e-Pocket Mattress. Use these cards to check whether a nearby model gives you a better price, a more suitable specification or a clearer match for your space and budget.
Available 
Luna Memory 1000 Pocket Hybrid Mattress
from £208-£394.
£208-£394
Sizes tracked: Single, Small Double, Double, King Size, Super King
Available 
Jay-Be Bio Cool Hybrid 2000 e-Pocket Mattress
from £264-£474.
£264-£474
Sizes tracked: Single, Small Double, Double, King Size
Retailer details used
Last checked 2026-07-21. The source list below is included to help you check the details behind the comparison. Always confirm the latest price, delivery cost, stock status and product details with the retailer before buying.
More mattresses to compare
These related guides and reviews can help you compare nearby options before buying.
Questions about this mattress
Is the Luna 4000 Plush Gel Memory Pocket Hybrid Mattress soft or medium-soft?
Mattress Online lists it as soft, with retailer snippets also describing it as soft to medium. In practical terms, that points to a cushioned feel rather than a firm one, so it is worth comparing against firmer hybrids if you prefer a more responsive surface.
What does the 25cm depth mean for my bed frame and bedding?
A 25cm mattress is a useful size check because it can affect fitted-sheet fit, topper use and low-clearance bed frames. If your frame is shallow or you already use a topper, measure before ordering so the finished height works in your room.
Does the price change much by size?
Yes. The tracked prices run from £262 for Single up to £645 for Super King, so size is a major part of the value decision. Always check the retailer for the latest price and availability on the exact size you need before buying.
What do the 100-night comfort trial and 10-year guarantee add?
They give you retailer-backed buying terms to compare against other mattresses on your shortlist. The trial may help if you are unsure about the softer feel, while the guarantee is another value factor to weigh alongside price, depth and construction.
Is the 4.6/5 rating enough to trust the mattress?
It is a useful sign that many buyers are happy with comfort and value, but it is still retailer-hosted review evidence rather than independent lab proof. Treat it as supporting context, then compare the construction, price and trial terms yourself.