Available 
Bodyshape Vitality Memory Foam Ortho Mattress
from £158-£305.
£158-£305
Sizes tracked: Single, Small Double, Double, King Size, Super King
Sleep guide
How to choose a mattress for back pain and support
Compare firm and extra-firm Mattress Online examples by support feel, memory foam comfort, depth and guarantee length so you can shortlist with more confidence.
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Last verified: 2026-08-16
What support really means in a mattress
For shoppers, support is about how a mattress helps you feel held in a straighter, more settled position rather than sinking too far in. Memory foam can contour more closely to the body shape, while firmer builds aim to keep the surface more structured; that is why the Bodyshape Vitality Memory Foam Ortho Mattress and Bodyshape Ortho Memory Foam Mattress sit in this guide alongside the much more solid Rock Hard Super Firm Foam Mattress. The practical comparison is not just feel, but also how much contouring you want versus how much structure you prefer.
Which firmness levels suit different sleepers
Firm and extra-firm are not the same experience, even when both are aimed at support-led buyers. A firmer mattress can suit shoppers who want a steadier feel, while the Rock Hard Super Firm Foam Mattress is positioned at the extreme end for those who want a very rigid surface; that is very different from the lower-cost Bodyshape Vitality Memory Foam Ortho Mattress, which is still firm but not as uncompromising. Sleep position matters here too, so it is worth checking whether you want a little give at the shoulders and hips or a flatter, more locked-in feel.
Best mattress constructions for support and comfort
The construction tells you a lot about day-to-day comfort. The Rock Hard Super Firm Foam Mattress uses a full foam block with no springs, is single-sided and has a 23cm depth, while the Bodyshape Ortho Memory Foam Mattress combines 17cm of reflex support with 3cm of memory foam and a firm orthopaedic feel. Those details matter because depth can affect bedding, toppers and bed-frame fit, and the comfort layer can change whether the mattress feels more contouring or more bare-bones.
When pressure relief matters as much as firmness
Pressure relief is worth considering if you want a supportive mattress that still has some body contouring. Retailer wording describes memory foam as moulding to the body shape, which may make firmer mattresses feel less abrupt without turning them soft; that is the role played by the memory foam layer in the Bodyshape Vitality Memory Foam Ortho Mattress and Bodyshape Ortho Memory Foam Mattress. The trade-off is that the more solid Rock Hard option may suit buyers who care more about an ultra-structured feel than about a closer contour.
What the retailer details add to the decision
The strongest shopper-facing signals on these pages are practical, not clinical: all three examples include a 100-night comfort trial, sizes from Single through Super King, and free-delivery messaging on the product pages. MattressOnline also shows a Trustpilot rating of 4.8 out of 5 from over 72,000 reviews, which is a useful retailer confidence signal, but product-level review counts are thin in the evidence we can see. Check the live listing for current price, delivery options, old mattress removal and whether the guarantee applies to the whole mattress or only part of it.
How to turn the comparison into a shortlist
The value spread is clear: Bodyshape Vitality Memory Foam Ortho Mattress starts from £158, Bodyshape Ortho Memory Foam Mattress from £199 and Rock Hard Super Firm Foam Mattress from £319, so the question is how much extra structure you want before paying more. The Rock Hard model also brings a 10-year guarantee and a 1-year cover guarantee, while the Bodyshape options show 3-year guarantees, so shoppers should compare peace-of-mind terms as well as firmness. Before buying, verify the size you need, bed-base compatibility, mattress depth and the latest retailer price and availability.
Mattresses to use as comparison examples
Available 
Rock Hard Super Firm Foam Mattress
from £319-£599.
£319-£599
Sizes tracked: Single, Small Double, Double, King Size, Super King
Available 
Bodyshape Ortho Memory Foam Mattress
from £199-£349.
£199-£349
Sizes tracked: Single, Small Double, Double, King Size, Super King
Retailer details used
Last checked 2026-08-16. 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.
- Bodyshape Vitality Memory Foam Ortho Mattress | MattressOnlineproduct-page evidence for Bodyshape Vitality Memory Foam Ortho Mattress
- Rock Hard Super Firm Foam Mattress | MattressOnlineproduct-page evidence for Rock Hard Super Firm Foam Mattress
- Bodyshape Ortho Memory Foam Mattress | MattressOnlineproduct-page evidence for Bodyshape Ortho Memory Foam Mattress
- Bodyshape Vitality Memory Foam Ortho Mattressrequest product source
- Rock Hard Super Firm Foam Mattressrequest product source
- Bodyshape Ortho Memory Foam Mattressrequest product source
Helpful next reads
Use these related mattresses guides and reviews to turn the advice into a practical shortlist.
Firmness questions
Is a firmer mattress always better for back pain concerns?
Not necessarily. A firmer feel can suit shoppers who want a more structured surface, but the better question is whether the mattress gives enough support without feeling too hard for your sleep position and body shape.
What does orthopaedic mean on a mattress listing?
On these pages it is used as a support-led description, often pointing to a firmer or more structured feel. It is worth treating it as a shopping term rather than a medical promise, then comparing depth, construction and firmness label.
Does memory foam help a mattress feel more supportive?
It can help the mattress feel more body-hugging and reduce the abruptness of a very firm surface. In this shortlist, memory foam appears in the Bodyshape Vitality and Bodyshape Ortho models, while the Rock Hard option relies on a more solid foam block.
How do mattress depth and size affect bed-frame compatibility?
Depth can change how the mattress sits on a frame and whether your sheets, toppers or headboard setup still work neatly. Sizes also matter: these examples come in Single, Small Double, Double, King Size and Super King, so check the live listing before ordering.
Does a 100-night comfort trial mean I can buy without risk?
It gives you a return window to review comfort at home, but it does not remove every practical check. You should still confirm delivery costs, removal options, the latest terms and whether the mattress size and depth suit your bed base.