Available 
Bodyshape Gel 2000 Pocket Hybrid Mattress
from £284-£544.
£284-£544
Sizes tracked: Single, Small Double, Double, King Size, Super King
Sleep guide
How to choose the right mattress firmness
A practical firmness guide that compares medium, firm and orthopaedic mattresses by feel, sleep position and value, using live MattressOnline examples.
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Last verified: 2026-09-25
What mattress firmness really means
Mattress firmness is about how soft or firm a mattress feels when you lie down on it, but that label is only part of the picture. MattressOnline uses its own 1-to-5 firmness scale and says there is no industry-approved standard, so a “firm” label on one model may not feel identical to another. That is why the Bodyshape Gel 2000 Pocket Hybrid Mattress, priced from £284 to £544, is useful as a medium-leaning reference point rather than a universal benchmark.
How sleeping position affects firmness choice
Sleeping position is one of the clearest clues for firmness choice. Side sleepers often need more cushioning at the shoulders and hips, while back sleepers usually suit a more even medium-firm feel, and stomach sleepers often need a firmer surface to help stop the hips sinking too far. In this shortlist, the Bodyshape Gel 2000 Pocket Hybrid Mattress offers a medium option, while the Bodyshape Ultra Ortho 1500 Pocket Mattress and Hypnos Burford Ortho Comfort Mattress both sit in firmer territory.
Firmness by body feel and support need
Firmness and support are related, but they are not the same thing. A mattress can feel firm without giving the same kind of support as another firm model, because the spring system and comfort layer change the overall feel; for example, the Bodyshape Gel 2000 Pocket Hybrid Mattress combines pocket springs with gel foam, while the Hypnos Burford Ortho Comfort Mattress pairs pocket springs with a cotton comfort layer. If you want a broader comfort-led comparison, the hybrid option starts at £284, while the Hypnos reaches £1,339 at the top of the visible range.
Common firmness mistakes to avoid
The biggest mistake is relying on the label alone and assuming two mattresses with the same firmness will feel identical. A mattress can feel different at home than it does when you read the spec, especially once bedding, bed frame depth and your usual sleep position come into play; MattressOnline also notes that depth can affect suitability for bedding and bed frames. Visible star ratings are a very light signal here because the benchmark data shows zero review counts for the three examples, so the 100-night comfort trial matters more than the rating number on its own.
What the source material says to verify
The strongest source-backed points are straightforward: firmness is subjective, support is separate from feel, and MattressOnline’s 1-to-5 scale is retailer-specific rather than an industry standard. All three example mattresses show a 100-night comfort trial and free delivery to most locations, which is useful because firmness preferences can change once a mattress is in the bedroom. Guarantee cover differs sharply, from 1 year on the Bodyshape Ultra Ortho 1500 Pocket Mattress, to 5 years on the Bodyshape Gel 2000 Pocket Hybrid Mattress, and 10 years on the Hypnos Burford Ortho Comfort Mattress, so shoppers should check what matters most before buying.
How to turn the guide into a shortlist
Use the shortlist as a compare-by-feel guide, not a ranking. The Bodyshape Gel 2000 Pocket Hybrid Mattress is the budget-friendly medium option at £284 to £544, the Bodyshape Ultra Ortho 1500 Pocket Mattress sits in the middle at £389 to £679 with a firmer feel, and the Hypnos Burford Ortho Comfort Mattress is the premium option at £749 to £1,339 for shoppers who want a more luxurious orthopaedic-style reference point. All three show five size variants, so the main decision is less about size breadth and more about which firmness, base fit and comfort layer suit your room, sleep position and budget.
Mattresses to use as comparison examples
Available 
Bodyshape Ultra Ortho 1500 Pocket Mattress
from £389-£679.
£389-£679
Sizes tracked: Single, Small Double, Double, King Size, Super King
Available 
Hypnos Burford Ortho Comfort Mattress
from £749-£1,339.
£749-£1,339
Sizes tracked: Single, Small Double, Double, King Size, Super King
Retailer details used
Last checked 2026-09-25. 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 Gel 2000 Pocket Hybrid Mattress | MattressOnlineproduct-page evidence for Bodyshape Gel 2000 Pocket Hybrid Mattress
- Bodyshape Ultra Ortho 1500 Pocket Mattress | MattressOnlineproduct-page evidence for Bodyshape Ultra Ortho 1500 Pocket Mattress
- Hypnos Burford Ortho Comfort Mattress | MattressOnlineproduct-page evidence for Hypnos Burford Ortho Comfort Mattress
- What Mattress Firmness Is Right for Me?Retailer firmness scale, feel descriptions, couple/back support notes, and no industry standard statement.
- Firm Mattresses - 100-Night TrialFirm mattress use cases for back/front sleepers and heavier builds.
- Mattress Firmness: Finding the Best Firmness for You!Core educational definitions, firmness vs support, weight and sleep-position guidance.
Helpful next reads
Use these related mattresses guides and reviews to turn the advice into a practical shortlist.
Firmness questions
Is a medium mattress right for most people?
Medium can be a sensible starting point, especially if you sleep in more than one position or share a bed with someone who wants a different feel. The Bodyshape Gel 2000 Pocket Hybrid Mattress is the clearest medium example here, but the right choice still depends on your body shape, sleep position and whether you prefer more cushioning or more support.
Why does the same firmness feel different between mattresses?
Construction changes the feel even when the label sounds the same. A hybrid with gel foam, a pocket sprung mattress with soft white fibres and an orthopaedic model with cotton fillings can all feel different because the comfort layer, spring response and depth shape the final feel.
Do trial periods matter when firmness is subjective?
Yes, because firmness is personal and can feel different once the mattress is in your room with your usual bedding and base. The three examples here all show a 100-night comfort trial, which gives you more room to judge whether the feel matches your sleep position and comfort preference.