Available 
Hypnos Wheatley Supreme Wool Mattress
from £1,859-£3,029.
£1,859-£3,029
Sizes tracked: Single, Small Double, Double, King Size, Super King
Buying guide
Best natural mattresses to compare
Compare five natural mattresses by fill material, size fit and value, with Hypnos cotton, wool and latex-led options plus one Kaymed latex model.
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Last verified: 2026-07-28
Quick verdict
This is a comparison shortlist, not a definitive ranking of the whole market. The five natural mattresses here span a wide entry-price range from £815 to £3,029, with the clearest differences coming from material-led feel: cotton, wool and latex, plus a mix of Hypnos and Kaymed. The Hypnos models supplied all sit at medium firmness, so shoppers are mainly comparing fill type, size coverage and whether the higher price buys a meaningful specification change rather than just a different badge.
Top picks to compare
Start with Hypnos Wheatley Supreme Wool Mattress (£1,859-£3,029), Hypnos Witney Latex Supreme Mattress (£1,269-£2,099), Kaymed Smart Latex 3500 Box Top Mattress (£1,059-£2,250) because they give you a focused set of current retailer options to compare. The visible price range is £404-£3,029, so check whether the extra spend buys a useful specification difference rather than only a different brand or finish. The shortlist includes Hypnos, Kaymed, Sealy, which helps you compare familiar brands against specification, delivery and value.
Available 
Hypnos Witney Latex Supreme Mattress
from £1,269-£2,099.
£1,269-£2,099
Sizes tracked: Single, Double, King Size, Super King
Available 
Kaymed Smart Latex 3500 Box Top Mattress
from £1,059-£2,250.
£1,059-£2,250
Sizes tracked: Single, Double, King Size, Super King
Available 
Hypnos Banbury Cotton Comfort Mattress
from £799-£1,569.
£799-£1,569
Sizes tracked: Single, Small Double, Double, King Size, Super King
Available 
Sealy Waltham Latex Advantage Mattress
from £404-£758.
£404-£758
Sizes tracked: Single, Small Double, Double, King Size, Super King
At-a-glance comparison
Use this table to scan the shortlist quickly before opening individual product pages. It covers Natural, so compare like-for-like where possible before deciding which mattress best fits your usual sleep position, preferred firmness and bed-frame size. The most useful checks are product type, available sizes, current price and whether the retailer details match the way you plan to use it.
| Product | Type | Firmness | Sizes | From |
|---|---|---|---|---|
| Hypnos Wheatley Supreme Wool Mattress | Natural | Check retailer | Single, Small Double, Double, King Size, Super King | £1,859 |
| Hypnos Witney Latex Supreme Mattress | Natural | Check retailer | Single, Double, King Size, Super King | £1,269 |
| Kaymed Smart Latex 3500 Box Top Mattress | Natural | Check retailer | Single, Double, King Size, Super King | £1,059 |
| Hypnos Banbury Cotton Comfort Mattress | Natural | Check retailer | Single, Small Double, Double, King Size, Super King | £799 |
| Sealy Waltham Latex Advantage Mattress | Natural | Check retailer | Single, Small Double, Double, King Size, Super King | £404 |
What the research shows
Mattress Online defines natural mattresses as using fibres from plants or animals, which is why wool, cotton and latex keep coming up in this shortlist. That material choice matters more than a generic “natural” label: the Hypnos Clinton Cotton Deluxe Mattress starts from £815, the Hypnos Witney Latex Supreme Mattress from £1,269, the Hypnos Wheatley Supreme Wool Mattress from £1,859, and the Kaymed Smart Latex 3500 Box Top Mattress sits in the same premium natural-mattress band. Review evidence on the exact models is limited, so the visible ratings and small review counts should be treated as light signals rather than strong proof of long-term satisfaction. In practical terms, these products are best compared on comfort expectations, support type and material-led feel, not on medical or treatment claims.
Trade-offs to compare before buying
Start with feel and support type, then work out whether the price difference is actually tied to a better fit for your room and bed frame. The Hypnos Clinton Cotton Deluxe Mattress is the lowest-priced entry point at £815 to £1,355 and uses cotton comfort fillings with pocket springs and a medium firmness rating. The Hypnos Wheatley Supreme Wool Mattress rises to £1,859 to £3,029 and also pairs wool comfort fillings with pocket springs and a medium feel, so the extra spend needs to justify itself in materials or size. The Hypnos Witney Latex Supreme Mattress and Kaymed Smart Latex 3500 Box Top Mattress are the latex-led options to compare if you want a more responsive natural feel, with the Kaymed model giving the shortlist a non-Hypnos construction to weigh against the three medium-firm Hypnos mattresses.
Why these picks made the shortlist
These five mattresses were shortlisted because they give a usable comparison across two brands, Hypnos and Kaymed, with enough size coverage and visible retailer detail to compare value properly. Four of the five shortlisted products are Hypnos, which helps you compare cotton, wool and latex-led constructions within one brand family instead of jumping between lots of unrelated product pages. The shortlist is narrow by product type, so it is most useful as a material-led comparison for shoppers who already know they want a natural mattress and now need to narrow the options by construction, firmness context and price.
What the shortlist shows at a glance
The entry prices in this group run from £815 on the Hypnos Clinton Cotton Deluxe Mattress to £1,859 on the Hypnos Wheatley Supreme Wool Mattress, with higher size prices reaching £3,029. Hypnos Witney Latex Supreme Mattress starts from £1,269, and the Kaymed Smart Latex 3500 Box Top Mattress starts from £1,159, so the shortlist is not arranged by price alone. Visible review counts are small on the exact models, which means the star ratings are useful for context but should not outweigh the product-page details, size coverage and current retailer price when you compare them. Size availability matters too: the Hypnos models supplied show multiple sizes, including larger formats, while the Kaymed listing should be checked for the exact size you need before you compare delivery or setup.
How to choose between these mattresses
Choose by sleep setup first: if you need a mattress for a standard frame, check the depth notes and make sure the size list includes your bed, especially if you need small double, king or super king. The Hypnos models supplied all show a medium firmness rating, so if you like a firmer or softer feel you should verify the Kaymed Smart Latex 3500 Box Top Mattress carefully before going further. Delivery and setup details also matter here because the retailer notes mention free delivery to most locations, an old-mattress removal service and a 100-night comfort trial, but exact terms can still vary by product and size.
Value buying notes
Value in this shortlist is about getting the right material and comfort profile for the money, not simply picking the lowest price. The Hypnos Clinton Cotton Deluxe Mattress is the budget-friendly starting point, while the Hypnos Wheatley Supreme Wool Mattress and Hypnos Witney Latex Supreme Mattress may justify their higher prices if you specifically want wool or latex comfort layers with the 10-year guarantee and 100-night comfort trial wording shown on the retailer pages. Because the price spread is wide, it makes sense to compare what each extra pound buys in material choice, size range and overall fit before you check the latest retailer price and availability.
Retailer details used
Last checked 2026-07-28. Use this as a shopping aid rather than a substitute for the live retailer listing. Always confirm the latest price, delivery cost, stock status and product details with the retailer before buying.
Helpful next reads
Keep comparing with related reviews and buying guides before checking the latest retailer prices.
Buying questions
Which material suits me best: cotton, wool or latex?
Cotton, wool and latex each point to a different feel. Cotton-led options such as the Hypnos Clinton are a good place to start if you want a familiar natural fill, wool-led models like the Hypnos Wheatley lean more traditional, and latex-led mattresses such as the Hypnos Witney and Kaymed Smart Latex 3500 Box Top are the ones to compare if you want a more responsive feel.
Are these mattresses all medium firmness?
The three Hypnos models supplied on the retailer pages are all marked medium, but you should still check the specific product page for the Kaymed Smart Latex 3500 Box Top Mattress before buying because firmness can differ by model or size. If you know you want something firmer or softer than medium, that should be one of your first checks.
How much do prices change by size?
Quite a lot. In this shortlist, the Hypnos Clinton Cotton Deluxe Mattress runs from £815 to £1,355, the Hypnos Witney Latex Supreme Mattress from £1,269 to £2,099, and the Hypnos Wheatley Supreme Wool Mattress from £1,859 to £3,029, so larger sizes can move the price well beyond the entry point.
Can I rely on the review scores if the counts are low?
Use them cautiously. The Hypnos Clinton shows 4.3/5 from 3 reviews, while the Hypnos Wheatley and Hypnos Witney show 5.0/5 from 3 and 2 reviews respectively, so the numbers are too small to treat as strong proof. They are still helpful as a light confidence check alongside the specifications and size options.
Do the trial and guarantee terms apply to all sizes?
The retailer pages shown for the Hypnos models mention a 100-night comfort trial and a 10-year guarantee, but you should still confirm the exact wording on the size and product page you plan to buy. That is especially important if you are comparing larger sizes or choosing between different mattress depths.