Simba, famous for its hybrid mattresses, has long offered premium bed bases in the European market. Among them, the Ashdown Bed Base has caught attention for its sleek design, quality craftsmanship, and remarkable ease of assembly. We have tested it in detail — and while this model remains a benchmark in the international high-end market, it is important to clarify right away that Simba Sleep has officially ceased its sales in France around 2024: the site simbasleep.fr now displays an explicit message to this effect. This test retains its value for those who wish to understand the criteria of excellence for a premium upholstered bed base and to identify the best alternatives available in the French market in 2026.
To compare this model with other references on the market, our selection of the best tested bed bases will help you make the right choice according to your budget and body type.
1. Presentation of Simba and the Ashdown Model
An Expert Brand in Innovative Bedding
Originating from the United Kingdom, Simba Sleep has built its reputation on technical materials and a design focused on the science of sleep. The brand experienced rapid growth in continental Europe during the 2010s, before gradually refocusing its activities on English-speaking markets (United Kingdom, Canada, Ireland). The Ashdown bed base has been designed to complement the Simba mattress range and provide a consistent bedding experience, from the floor to the surface fabric.
The Ashdown Bed Base
The Ashdown is presented as a soft-slat upholstered bed base, designed to ideally pair with hybrid or foam mattresses. Here are its main features:
- Type: soft-slat upholstered bed base
- Structure: FSC certified wood
- Cover: premium fabric, soft and durable, available in several colors
- Feet: solid wood, several finishes to choose from
- Assembly: tool-free, simply by fitting together
- Colors: several options available (gray, beige, anthracite depending on the markets)
2. Complete analysis of our test
Comfort
The support provided by the Ashdown is even across the entire surface, without dips or areas of excessive rigidity. The flexible slats slightly absorb nighttime micro-movements, which reduces the transmission of vibrations between two sleepers. The bed base perfectly stabilizes hybrid or soft foam mattresses without ever altering their inherent qualities: a firm mattress remains firm, a plush mattress retains its shape.
Composition and materials
The structure made of FSC certified wood ensures responsible forestry sourcing and long-lasting durability. The upholstery fabric, dense and resistant to abrasion, maintains its appearance after several years of intensive use. Notably, the Ashdown produces no squeaking, even under the repeated stresses of an active couple — the rigidity of the assembly and the quality of the joints contribute significantly to this.
Suitable for all body types
The Ashdown bed base supports up to 120 kg per sleeper, making it perfectly suitable for heavier builds or couples with significantly different weights. No sagging was observed after several months of intensive use during our test, whether in the center or on the edges of the bed base.
Ventilation and thermoregulation
The flexible slats, spaced evenly, allow for excellent air circulation under the mattress. This natural ventilation helps to dissipate nighttime body moisture and regulate surface temperature. For sleepers who tend to get hot at night, this is a tangible advantage that also extends the lifespan of the mattress by preventing moisture buildup in the foams.
Maintenance and durability
Daily maintenance is minimal: a vacuuming of the upholstery fabric and a damp wipe in case of stains are sufficient. The manufacturer’s warranty is 10 years against manufacturing defects, which reflects the confidence that Simba placed in this product. The estimated lifespan, depending on use and maintenance, is between 10 and 15 years.
Value for money
At the time of its launch in France, the Ashdown was offered starting at around €499 for a 140×190 cm. This premium positioning was justified by the quality of the materials, FSC certification, expected longevity, and ease of assembly. By comparison, an entry-level upholstered bed base without certification or long-term warranty can be purchased today for between €150 and €300, but with significantly lower performance and durability.
View on Amazon3. Advantages and Disadvantages
Advantages
- Premium design and meticulous finishes
- Tool-free, quick, and intuitive assembly
- Stable support and perfectly silent
- FSC certified materials
- Very good compatibility with all types of modern mattresses
- Long manufacturer warranty (10 years)
- Excellent ventilation thanks to spaced slats
Disadvantages
- High price, positioned in the premium segment
- No version with integrated storage box
- No longer available in France since 2024: purchase only possible from the UK (simbasleep.com)
- Potentially long and costly international shipping
4. For what type of sleeper?
Ideal for:
- Couples: impeccable stability, sleeping independence, no motion transfer
- Heat-sensitive sleepers: very well-ventilated base, effective thermal regulation
- Heavyweight individuals: sturdy structure up to 120 kg per sleeper
- Design enthusiasts: meticulous finishes, high-quality fabric, multiple colors
Less suitable for:
- Those on a tight budget or looking for a functional entry-level base
- Sleepers seeking integrated storage (no storage version available)
- Buyers residing in France, for whom access to after-sales service would be complicated
5. Where to Buy — and What Alternatives in France?
Since Simba’s withdrawal from the French market, the Ashdown bed base is no longer available for sale in France. The website simbasleep.com remains active for the UK market, but the delivery conditions, after-sales service, and warranty are no longer suitable for French consumers.
Good news: the French market offers very high-quality alternatives in the same premium segment, with solid warranties, fast delivery, and customer service in French.
View on Amazon6. Alternatives to Consider
If the Ashdown has convinced you with its features, here are products available in France in 2026 that offer comparable performance:
- Someo Box Spring: recognized hexagonal brand, made in France, excellent quality of fabrics and structure, solid warranties and French-speaking customer service. Starting at ~€250 depending on the dimensions.
- Tediber Box Spring: tool-free assembly, clean minimalist design, firmer structure than the Ashdown, fast delivery in France.
- Emma Select Premium: good ventilation, neat finishes, slightly more understated positioning, compatible with all types of mattresses.
In any case, prioritize a slatted base if your mattress is made of memory foam or latex, and a rigid slatted base or box spring if you sleep on a traditional Bonnell spring mattress.
7. The opinion of our bedding expert
The Ashdown by Simba remains a benchmark in the world of high-end upholstered bases: exemplary tool-free assembly, premium aesthetics, sustainably sourced materials certified by FSC, stable support, and perfect ventilation. If this model had been maintained on the French market, it would undoubtedly have been among the top contenders in our selection.
Today, we recommend it as a reference standard for evaluating other premium bases available in France. The criteria that make it strong — ventilation, silence, sturdiness, intuitive assembly — are precisely what any discerning buyer should demand.
8. FAQ
Is the Ashdown bed base still available in France?
No. Simba Sleep officially ceased its sales in the French market around 2024, after gradually reducing its presence in France since 2022. The site simbasleep.fr now displays a clear message indicating that the brand no longer operates in France. The Ashdown is still marketed in the UK and some English-speaking countries, but international shipping fees, potential customs procedures, and limited access to after-sales service make this purchase inadvisable from France. Quality alternatives are available in the French market, including Someo, Tediber, or Emma — brands that offer French-speaking customer service, fast delivery, and warranties suited to French consumers.
Is this bed base suitable for people suffering from back pain?
Yes, under certain conditions. The Ashdown bed base, thanks to its regularly spaced flexible slats, provides uniform support across the entire surface of the mattress, which prevents localized sagging that could create unwanted pressure points. For individuals suffering from lower back pain or neck pain, the bed base is half of the solution: the other half relies on the choice of mattress. An upholstered bed base like the Ashdown pairs ideally with a memory foam or latex mattress, which conforms to the body's curves. However, if your mattress is too soft or too old, even the best bed base will not fully compensate. Consult a specialist if your pain persists, as bedding alone is not always the main cause.
Can it be easily tested or returned?
At the time of its marketing in France, Simba offered a 200-night trial period with free returns — one of the most generous offers on the market. Today, since the brand no longer operates in France, these conditions no longer apply to French consumers. If you order from the UK, check the international trial and return conditions directly on simbasleep.com, as they may differ depending on the delivery country. For French buyers, it is better to turn to local alternatives that offer similar trial periods (often between 30 and 100 nights depending on the brands) with simplified returns from France.
Are tools required to assemble the Ashdown bed base?
No. One of the major advantages of the Ashdown is precisely its tool-free assembly system: all parts fit together with simple pressure and clipping, without screws or screwdrivers. Complete assembly generally takes between 15 and 30 minutes depending on the chosen dimensions, even for one person. The legs are screwed in by hand. This intuitive type of assembly is becoming increasingly common in the premium segment, but the Ashdown stands out for the robustness of its joints once in place: no play, no squeaking, even after several years of intensive use according to our observations.
What types of mattresses are compatible with the Ashdown bed base?
The Ashdown bed base with flexible slats is compatible with the vast majority of modern mattresses: memory foam, natural or synthetic latex, hybrid mattresses (pocket springs + foam), and classic foam mattresses. Its ventilated structure, with spaced slats, is particularly recommended for mattresses requiring good ventilation — which is the case for most foam and latex mattresses. However, traditional Bonnell spring mattresses (continuous springs, often found in entry-level ranges) may require a rigid slat bed base or a continuous upholstered bed base rather than flexible slats. Simba naturally recommended its own hybrid mattresses for optimal pairing.