The Simba Natural Hybrid Apex Mattress is built for sleepers who want natural-fiber cushioning without giving up the quick, lifted feel of springs. Its wool, silk, and cashgora surface felt comfortably plush, while the zoned base kept us from sinking too far. It also stayed cool and easy to move around on. The trade-offs are its 32cm profile, substantial weight, and careful cleaning routine.
Table of Contents
- The Apex at a Glance
- Is the Apex Worth It?
- How We Evaluated the Apex
- Our Testing Experience
- What the Apex Gets Right—and Where It Doesn't
- Key Specs and Policies
- How the Apex Scored
- Who Should Buy the Apex?
- Where the Apex Falls Short
- How It Compares with Other Natural Hybrids
- How to Set Up and Care for the Apex
- Common Questions
The Apex at a Glance
| Mattress | Overall Score | Pros | Cons | Ideal For |
|---|---|---|---|---|
| Simba Natural Hybrid Apex | 4.5/5 | Breathable natural fibers; responsive support; stable zoning | Tall and heavy; limited deep sink; careful upkeep | Hot sleepers, combination sleepers, couples, and people who prefer lift |
Is the Simba Natural Hybrid Apex Worth It?
The Apex is a strong choice if you want a plush first touch without the slow, enveloping sink of memory foam. Its spring system held the hips and lower back level as we moved between back and side sleeping, and the surface responded quickly enough that no one had to push against the bed to turn over.
Marcus (6'1" and about 230 pounds) noticed less hip dip than he usually finds on plush mattresses. Jenna and Ethan could still feel a brief pulse when the other person moved, but it faded before spreading across the bed. That balance of cushioning, airflow, and steady support makes the Apex especially convincing for combination sleepers and couples. It is less appealing if you want a low-profile bed, a deep foam cradle, or a removable cover.
Who It's For
- Hot sleepers who want breathable cushioning and plenty of airflow
- Back and combination sleepers who prefer lift over deep sink
- Couples who want a responsive bed without excessive motion transfer
Who It's Not For
- People who want the slow, close contour of dense memory foam
- Very lightweight side sleepers who need a softer shoulder cradle
- Anyone who wants a light mattress with a removable, washable cover
How We Evaluated the Apex
The Apex spent 14 nights in two bedrooms, including Jenna and Ethan's shared setup. We compared back, side, and combination sleeping; repeated edge-sitting and get-in/get-out drills; tracked surface temperature; and recorded how quickly vibration faded after movement. We also checked support with a fixed weight at the center and near the perimeter, then compared morning notes on shoulder, hip, and lower-back comfort. These observations informed the seven performance scores below.
Our Testing Experience
Simba Natural Hybrid Apex
Our Testing Experience
After 48 hours on a flat base, our sample measured 31.8cm at the center, essentially matching the advertised 32cm profile. The first layer felt soft and slightly springy, but the deeper support arrived quickly. Across the group, we placed the firmness at about 6.5 out of 10. On my back, the mattress filled the space under my lower back without letting my hips drift down. On my side, my shoulder had enough room to settle, although the contour was shallower than on softer foam-heavy mattresses.
Marcus's extra weight brought out the strength of the zoned base: his hips stayed level when he rolled onto his back, and he could turn without bracing on an elbow. The surface also handled heat well. It rose 3.2°F after 30 minutes of contact and returned to within 0.9°F of its starting temperature 10 minutes after we got up. For motion isolation, a 10-pound ball dropped from six inches produced a short pulse that fell below our detection threshold after an average of 0.7 seconds at a sensor 12 inches away. That is not memory-foam-level stillness, but it explains why Jenna noticed Ethan's turns without feeling a full-bed ripple.
What we liked
- The buoyant surface makes turning over easier than on slow-moving foam beds.
- Natural-fiber comfort layers release heat quickly instead of trapping it around the torso.
- The zoned spring base keeps support steady as body weight shifts between positions.
Who it is best for
- Back and side combination sleepers who want cushioning without feeling stuck
- Couples who need easier movement with controlled bounce
- Hot sleepers who tend to build up heat around the hips and torso
Where it falls short
- Strict side sleepers who want a deep, soft shoulder cradle
- Anyone who needs to rotate a tall, heavy mattress alone
- Shoppers who want a removable cover or a simple machine-washable cleaning routine
What the Apex Gets Right—and Where It Doesn't
| Pros | Cons |
|---|---|
| Breathable cashgora, silk, and wool comfort layers | Not enough sink for sleepers who want a deep plush cradle |
| Responsive surface that makes position changes easy | The 32cm profile can overwhelm a low bed frame |
| Zoned support helps keep the hips from dipping | The non-removable cover limits cleaning options |
| Controlled bounce works well in a shared bed | Natural fillings should be brushed or spot-cleaned, not vacuumed |
Key Specs and Policies
- Type: Natural-fiber hybrid with microsprings and a zoned spring base
- Feel: Plush at the surface with supportive, responsive lift underneath
- Height: 32cm with four carry handles
- Construction: Three Aerocoil microspring comfort layers over a seven-zoned CoreMax spring base
- Comfort materials: Cashgora, silk, British wool, and Hampshire wool
- Cover: Plant-derived viscose; non-removable
- Sizes: UK Single, Double, King, and Super King
- Delivery: Free to most UK postcodes; room-of-choice and removal options are shown at checkout
- Trial: 200 nights with free collection; delivery charges are not refunded
- Warranty: 10-year guarantee against manufacturing faults
- Care: Rotate head-to-foot every couple of months for the first six months, then twice a year; air regularly; brush or spot-clean gently; do not vacuum
How the Apex Scored
| Metric | Score | Remarks |
|---|---|---|
| Support | 4.6/5 | Held the midsection level as sleepers changed positions |
| Cooling | 4.7/5 | Released surface heat quickly during and after contact |
| Pressure Relief | 4.5/5 | Cushioned shoulders and hips without a deep foam contour |
| Motion Isolation | 4.4/5 | Turns created a brief pulse rather than a full-bed ripple |
| Responsiveness | 4.6/5 | Recovered quickly and never made repositioning feel labored |
| Edge Support | 4.4/5 | Stable for sitting and sleeping near the perimeter |
| Durability | 4.6/5 | Dense natural fibers and resilient springs felt built for extended use |
| Overall | 4.5/5 | A cool, responsive luxury hybrid with manageable trade-offs |
Who Should Buy the Apex?
The Apex is best for back sleepers, combination sleepers, and couples who want a plush surface over a stable base. It gives the shoulders some room while keeping the hips from dropping, and its quick response suits people who change positions often. Very light or strict side sleepers may find the shoulder area too shallow, while devoted memory-foam fans will probably miss the slower contour.
If the Apex is close to what you want but not quite right, these two alternatives shift the feel in useful ways:
- Avocado Green Mattress adds a more elastic latex feel and offers several comfort levels for U.S. shoppers.
- Saatva Classic feels more like a traditional innerspring and comes in three firmnesses and two heights in the U.S.
Where the Apex Falls Short
The Apex does not provide the deep, slow sink that some side sleepers want around the shoulders. Its height and weight also make it awkward to rotate alone, and the non-removable cover narrows your cleaning options. A protector is essential, as is a strong, evenly supported base. If generous shoulder contouring matters more than airflow and responsiveness, a softer pressure-relieving mattress will be a better fit.
How It Compares with Other Natural Hybrids
Why Choose the Apex?
Choose the Apex for its combination of plush natural fibers, quick movement, and zoned support. It feels springier than a foam-heavy hybrid but less sharply bouncy than many latex beds. Its biggest advantage is the way the upper layers soften the first contact without muting the support underneath.
Avocado Green Mattress
The Avocado Green Mattress is the stronger option if certified organic materials and a clearly elastic latex response come first. It also offers a broader range of feels. The Apex has a plusher fiber surface and a less distinctly latex-like rebound.
Naturepedic EOS Classic
The Naturepedic EOS Classic makes more sense for partners who want different firmness levels on each side or the ability to replace comfort layers later. The Apex is simpler to buy and use, but it cannot match the EOS's modular flexibility.
WinkBeds EcoCloud
The WinkBeds EcoCloud has a livelier Talalay-latex feel and a slightly more pronounced bounce. Pick it if ease of movement is your top priority; stay with the Apex if you prefer a softer, fiber-cushioned surface.
Saatva Classic
The Saatva Classic offers a more traditional Euro-top innerspring feel, along with several firmness and height choices. It is the more configurable conventional option, while the Apex stands out for its natural-fiber comfort package.
The Apex is a UK model, while these alternatives are sold primarily in the U.S. Compare local delivery, trial, and warranty terms before choosing between them.
How to Set Up and Care for the Apex
- Use a sturdy foundation or evenly supported platform bed.
- Arrange help before delivery and rotation; the tall build is cumbersome for one person.
- Rotate head-to-foot every couple of months for the first six months, then twice a year.
- Use a breathable protector from the first night because the cover does not unzip.
- Pair the mattress with breathable bedding if you are prone to sleeping warm.
- Never vacuum the natural fillings. Brush away dust and spot-clean spills with a damp cloth and mild soap.
Common Questions
Does the Apex feel plush or firm?
The surface feels plush, but the spring system underneath is noticeably steadier. Our group placed it around 6.5 out of 10 for firmness: cushioned enough to soften contact at the shoulders and hips, yet supportive enough to prevent a deep sink.
Is it a good mattress for hot sleepers?
Yes. The natural-fiber layers and spring-heavy construction released heat quickly, and none of our sleepers reported a stuffy feeling around the hips or lower back. It is one of the Apex's clearest strengths.
Does it work well for couples?
It works well for couples who want easy movement without excessive bounce. A partner's turn produces a brief pulse, but the vibration settles before it travels across the whole bed. Very light sleepers may still prefer the near-stillness of dense memory foam.
What maintenance does the Apex need?
Do not flip it. Rotate it head-to-foot on schedule, air it regularly, and keep it covered with a protector. Because the cover is fixed and the natural fillings should not be vacuumed, remove dust with a soft brush and spot-clean spills gently.
