Simba Earth Apex 6700 Cashgora Mattress Review
The Simba Earth Apex 6700 Cashgora Mattress brings together cutting-edge sleep technology and the finest natural materials. Designed for buyers who demand the very best, this luxury mattress claims to deliver a cloud-like feel, advanced support, and eco-friendly credentials. But how does it really perform for UK sleepers? Our in-depth review covers features, comfort, support, who will benefit most, and whether it’s worth the investment.
Overview: What Is the Simba Earth Apex 6700 Cashgora Mattress?
Standing out in Simba’s eco-conscious Earth collection, the Apex 6700 Cashgora blends technical prowess with indulgent comfort. At its core are 1000 CoreMax™ carbon steel full-size springs, paired with 5,700 Aerocoil® mini springs. The cashgora, silk and wool upper layers deliver soft cushioning, while a reinforced frame and edge-to-edge support promise stability across the mattress.
Simba’s unique design focuses on responsive support, excellent motion isolation, and temperature management. It’s crafted with sustainability in mind—an advantage for eco-aware buyers seeking a greener mattress solution without sacrificing luxury or comfort.
Key Features of the Simba Earth Apex 6700
Let’s break down the notable features that set this model apart from its competitors:
Seven-Zone CoreMax™ Spring System
The mattress is built on a foundation of 1,000 robust CoreMax™ springs, each zoned in seven regions to give tailored support where your body needs it most. Shoulders, hips, and lower back receive different responses, helping maintain healthy spinal alignment whether you’re a side, back or combination sleeper.
The spring unit also includes a reinforced frame. This ensures strong edge support, reducing the chance of ‘rolling off’ and maximising the useable sleep surface—especially vital for couples sharing a double or king size.
5,700 Aerocoil® Mini Springs
What makes the Apex 6700 unique is the sheer volume of mini springs layered above the main spring unit. Each Aerocoil® spring is individually responsive, fine-tuning the mattress to your unique shape and movements throughout the night. This advanced design minimises partner disturbance and aids in pressure relief, adapting to subtle changes in position.
Cashgora, Silk and Wool Comfort Layers
Combining sustainability with softness, Simba uses a blend of:
- Cashgora: A rare, ultra-soft natural fibre, even finer than cashmere.
- Silk: For a luxurious touch and added temperature regulation.
- Wool: Excellent for moisture wicking and helping keep you cool in summer, warm in winter.
These layers provide immediate plush comfort, a gentle ‘sink-in’ effect, and impressive breathability.
Edge-to-Edge Support Frame
The outer frame strengthens the mattress’s perimeter, preventing sagging and giving a consistent feel right to the edge. This boost to sleep space is great news for couples, restless sleepers, or anyone who likes stretching out.
Advanced Cooling and Temperature Regulation
The clever combination of wool, silk, and open coil structures allows air to circulate freely. This creates an effective cooling system. It helps to move excess heat and moisture away from your body—ideal for anyone who struggles with overheating or night sweats.
Responsiveness and Motion Isolation
The adaptive spring layers ensure each movement is absorbed and localised. If your partner turns in the night or gets up early, you’ll be less likely to feel it. Motion transfer is impressively minimised, making this an excellent option for light sleepers or couples with different bedtimes.
Natural and Sustainable Materials
Simba places an emphasis on eco-conscious sourcing. By using cashgora, silk, and wool, and carefully choosing spring construction, the Apex 6700 reduces reliance on synthetic foams and plastics found in many other mattresses. This is a greener choice, both at purchase and at end of life.
Who Will Benefit from the Simba Earth Apex 6700?
This mattress is tailored to buyers who want a premium experience and will notice the difference high-end design makes. It best suits:
- Couples: With superb motion isolation, reinforced edges, and a wide sleeping surface, it’s brilliant for sharing.
- Hot sleepers: The natural fillings and airflow system regulate temperature to keep you cooler at night.
- Those wanting targeted support: Seven body zones and 5,700 mini springs contour to your body, providing relief for common aches and pains.
- Light sleepers or those sensitive to partner movement: You’ll notice less disturbance and a more settled night overall.
- Eco-conscious buyers: Prefer natural, responsibly sourced materials and minimal use of foam or chemicals.
Comfort and Feel
The Simba Earth Apex 6700 is most often rated as medium-firm, though the plush top layers give a soft initial feel that graduates into supportive firmness. The blend of cashgora, silk and wool provides cushion and breathability, while the pocket springs keep you lifted and aligned. This makes it a versatile choice for most sleep positions.
Side sleepers get immediate pressure relief thanks to the comforting top layers and tailored zoning. Back sleepers benefit from the strong core and frame, keeping their spine neutral and evenly supported. Stomach sleepers will enjoy both the cushioned touch and reliable core support, without sinking in too deeply.
Edge Support Performance
Thanks to the edge-to-edge support system, you can sit or sleep near any edge of the mattress without feeling like you’re about to slide off. This is a feature often overlooked until you experience it—especially important if your bed is against a wall, or you need to ‘perch’ for dressing or reading.
Motion Isolation for Partners
The twin layers of full and mini pocket springs are incredibly effective at isolating movements. Couples will appreciate not being woken by a restless partner in the early hours. It’s an area where hybrid mattresses like the Apex 6700 perform much better than basic open coil or spring models.
Cooling and Breathability
Overheating is a common problem with memory foam or cheaper mattresses. The cashgora, silk, and wool blend works together with the open spring construction to wick heat and humidity away. Even in the warmer months, airflow remains consistent—keeping you dry and comfortable throughout the night.
Support and Spinal Alignment
The seven zones of support provide relief to pressure points while keeping the spine correctly aligned. Whether you have back, hip or shoulder pain, this zoning promotes better posture and muscle recovery overnight. For those specifically seeking pain relief or orthopaedic support, you can find more advice in our guide to the best mattresses for back pain relief.
Environmental Considerations
The Apex 6700 is a testament to Simba’s commitment to environmentally friendlier sleep products. Using natural, biodegradable materials means fewer microplastics and reduced landfill impact. It’s an especially wise choice for those who feel environmental responsibility is as important as personal comfort.
If you’re interested in other eco-friendly and sustainable options, our feature on the best organic mattresses in the UK is worth exploring.
Build Quality and Durability
Durability is one of the main justifications for this mattress’s price point. The high spring count, robust steel, careful stitching, and wear-resistant natural fibres mean you can expect the Simba Earth Apex 6700 to hold its shape and comfort for years. Proper care—like rotating head-to-toe every few months—will get the best long-term value from this premium investment.
Sizes and Pricing
The Simba Earth Apex 6700 comes in various standard UK bed sizes (single, double, king, super king). At £923.06 for a single, it’s a luxury buy, commonly discounted from its RRP of £1,299. For comparable comfort in larger sizes, expect the price to scale up accordingly. View the latest pricing and deals at Mattress Online.
If you’re weighing up value, have a look at our round-up of the best mattresses for comfort and value across all budgets.
How Does It Compare to Other Mattresses?
The Simba Earth Apex 6700 sits among Simba’s most advanced mattresses. If you’re considering Simba’s range, models like the Hybrid Pro and Hybrid Luxe offer some similarities—such as multi-layer spring technology—at different price points. However, neither matches the Apex 6700’s volume of fine mini springs or the plushness of its cashgora and silk top. Competitors with similar premium bills of materials, like Hypnos or Millbrook, may rival its comfort at a similar price, but few match the Apex 6700 for eco credentials and responsive support.
To compare this Simba model with others or its main rivals, see our mattress comparisons of leading UK brands.
Is It Good for Back, Side or Stomach Sleepers?
One of the major plus points of the Apex 6700 is its adaptability across sleep styles. The plush surface makes it comfortable for side sleepers. Zoned support cradles the shoulders and hips, reducing pressure. At the same time, robust underlying springs ensure back sleepers get the alignment and lumbar support crucial for avoiding pain. Stomach sleepers will also find the mattress keeps the hips from sinking too far, preventing lower back strain.
If you have strong preferences or specific needs—like extra firmness or softness—check our detailed analysis of popular UK mattresses for more tailored advice.
Partner Disturbance and Sharing the Bed
Edge-to-edge support and excellent motion isolation make the Apex 6700 one of the better mattresses for couples. You can use the entire sleep surface without sagging or roll-off, and most will find partner movement barely detectable. This is a big leap up from traditional memory foam or open coil spring mattresses, which often struggle with both issues.
Temperature Control Night After Night
Very few mattresses offer such effective cooling in a natural package. With wool, silk, and airy spring layers, the mattress adapts as your body heats up or cools down. It’s a real step forward for anyone who finds synthetic foam mattresses suffocating or sweaty in summer.
Is the Simba Earth Apex 6700 Good for Allergy Sufferers?
The natural materials lend themselves to improved breathability and moisture control, an advantage for those prone to dust mites or allergens. However, anyone with a specific allergy to animal fibres (wool, cashgora, silk) should exercise caution. For more advice on hypoallergenic options and encasements, see our guide to the best mattresses for allergies in the UK.
Are There Any Downsides?
No mattress is perfect for every single sleeper. Some points to consider with the Apex 6700:
- Premium Price: It’s an investment, costing more than mainstream beds-in-a-box.
- Weight: A solid build means it’s heavy to move—do ask for help when handling/rotating.
- Natural Materials: May have a slight initial scent, which usually dissipates in a few days (learn more about off-gassing here).
- Firmness: Medium-firm is versatile for most, but those seeking ultra-firm or soft beds should check specific models for their preferred feel.
Setup, Care and Maintenance
The Apex 6700 is delivered rolled and boxed for convenience. Once unboxed, give it a few hours—or ideally overnight—to fully expand and air out. Regular rotation (every 2-3 months) helps maintain the mattress’s shape and comfort longevity. Use a high-quality mattress protector to keep it fresh and safe from spills (see why protectors matter here).
Warranty and Trial Period
Simba offers a manufacturer’s warranty covering typical defects. Mattress Online may also provide a trial period for returns and exchanges, but always confirm current policies before purchasing. This gives you peace of mind if you’re not sure the feel is perfect for you. Learn about what’s covered and how to claim in our warranty secrets guide.
Customer Reviews – What Are Real Buyers Saying?
Feedback from UK sleepers is overwhelmingly positive. Common themes include praise for pressure relief, cooling, and luxurious comfort. Couples highlight the excellent edge support and ‘no disturbance’ feel. Owners note improvements in back pain or restless sleep, confirming Simba’s claims of ergonomic zoning.
The only negative reviews tend to focus on the price, or personal firmness preferences. As with all premium mattresses, value is subjective—but the Apex 6700 has proven to deliver satisfaction for discerning buyers who prioritise sleep quality.
Is the Simba Earth Apex 6700 Worth the Price?
At over £900 for a single and more for larger sizes, the Apex 6700 is a major investment. If your priorities are top-tier comfort, natural and sustainable construction, and state-of-the-art support, it’s well worth considering. This is a mattress designed for years of restorative sleep, using advanced features and honest materials. If you take your sleep seriously and value the best, few rivals can match its performance.
For those who may want to explore a wider selection—including options for various budgets, specialist needs, or alternative brands—be sure to browse our detailed mattress reviews and ultimate mattress buying guide for UK shoppers.
Verdict: Who Should Buy the Simba Earth Apex 6700 Cashgora Mattress?
If you want the best in luxury hybrid sleep, crave both softness and support, share your bed, or suffer with overheating or aches, the Apex 6700 is a superb choice. Its technical build, quality materials, and environmental considerations set it apart in a crowded mattress market.
For those who have indulged in this Simba mattress, the improved sleep quality, fewer aches, and undisturbed rest make the price tag worthwhile. If you fit the profile of a discerning, eco-minded shopper seeking lasting value and superior sleep, this mattress deserves a place at the top of your shortlist.
Conclusion
The Simba Earth Apex 6700 Cashgora Mattress is a stand-out product that pushes the boundaries of what a premium, sustainable hybrid can achieve. With targeted support, indulgent comfort layers, robust edge-to-edge design, and advanced cooling, it justifies its position as a top choice for UK shoppers wanting no-compromise sleep. Shop now to experience why it ranks among the best Simba and luxury mattresses available.