Silentnight 800 Mirapocket Memory Mattress Review
Choosing the right mattress can be a life-changing decision for your sleep quality and general well-being. If you’re searching for a supportive, comfortable, and excellent-value hybrid mattress, the Silentnight 800 Mirapocket Memory Mattress might be at the top of your list. But does it really live up to the promise? This detailed review will walk you through everything you should know before buying, from construction and comfort layers to real-world performance and alternatives.
What is the Silentnight 800 Mirapocket Memory Mattress?
The Silentnight 800 Mirapocket Memory Mattress is a hybrid bed combining 800 pocket springs with a responsive layer of memory foam. It is crafted by Silentnight—one of the UK’s most trusted bedding brands—and designed to offer balanced support and pressure relief without breaking your budget. This mattress is available in several sizes, but the best-seller is the king size, measuring 150cm x 200cm.
With a medium to firm feel, this mattress aims to suit a wide range of sleepers, including couples, back sleepers, and anyone in need of contouring support. At a competitive price point of £444.95 (RRP £541), it’s a tempting option for those seeking both quality and value.
Silentnight’s Reputation in the UK Mattress Market
Silentnight has built a reputation over decades for producing durable, reliable mattresses suitable for many British households. Known for technological innovation, Silentnight’s Mirapocket spring system and dedication to hypoallergenic materials have made their beds popular in the UK for years. If you wish to explore more Silentnight options, see our comprehensive Best Mattresses UK Guide.
Key Features & Specifications
Below are the main features and specifications of the Silentnight 800 Mirapocket Memory Mattress:
- Type: Hybrid (Pocket springs + memory foam)
- Spring Count: 800 Mirapocket individual springs
- Comfort Layer: Responsive memory foam
- Support Layer: Mirapocket spring system, zoned for body support
- Firmness: Medium to firm
- Dimensions (King): 5’0″ x 6’6″ (150cm x 200cm)
- Height: Approx. 25cm
- Hypoallergenic: Yes – suitable for allergy sufferers
- Price: £444.95 (RRP £541)
- Retailer: Mattress Online
Who is This Mattress Best For?
The Silentnight 800 Mirapocket Memory Mattress may be the perfect choice if you:
- Prefer a medium to firm feel – not too soft, not too hard.
- Sleep on your back, front, or switch positions during the night.
- Share a bed and want minimal partner disturbance.
- Are seeking pressure relief for aches and restless nights.
- Want a blend of traditional support and modern foam comfort.
- Suffer from allergies and need a hypoallergenic option.
- Need a quality mattress that won’t cost the earth.
If you’re a side sleeper or require extra-deep pressure relief, you may wish to consider beds from our Best Memory Foam Mattress list, or see how the 800 Mirapocket compares to other popular UK models.
Construction: Inside the Mattress
The Silentnight 800 Mirapocket Memory Mattress is constructed with two core components: the Mirapocket spring system and a comfort layer of memory foam. This classic hybrid set-up is designed for body-contouring support and a cushioned sleeping surface.
Mirapocket 800 Spring System
The 800 individually nested pocket springs work independently from each other. This means they respond separately to pressure, adjusting to your body’s unique shape and weight. Such springs help with targeted support and work well to reduce movement transfer – ideal if your partner tends to toss and turn at night.
Unlike open coil mattresses, these springs offer better alignment and help prevent that ‘roll-together’ feeling.
Memory Foam Layer
A generous layer of memory foam sits above the springs. This material is engineered to respond to your body heat and weight, gently moulding to your sleeping position. The result is pressure relief where it’s needed most—such as your shoulders, hips, and lower back.
For those interested in the benefits of memory foam versus springs alone, our Memory Foam vs Spring Mattresses guide covers the differences in feel and performance in depth.
Top Cover and Quilting
The cover is soft, breathable, and quilted for extra comfort. It’s also hypoallergenic, making it a smart option for allergy sufferers.
Comfort and Firmness: Real Feel on the Bed
Silentnight rates the 800 Mirapocket Memory Mattress as medium to firm. In real-world use, most sleepers find it sits gently on the firmer side of medium—but not hard by any means. It offers a little “give” from the memory foam, then steady, reliable support from the springs beneath.
This balance helps promote healthy spinal alignment, particularly for back and front sleepers. It’s also reassuring for heavier sleepers who often need more support through their hips and torso.
If you’re unsure how “firm” is defined, see our explanations in Mattress Firmness Scale Explained.
Pressure Relief and Support
Pressure relief is where memory foam excels, and this mattress delivers. The foam gently cradles high-pressure points, like shoulders and hips, while the springs underneath offer essential pushback support.
This can help reduce morning aches and make it easier to get comfortable whether you sleep alone or with a partner.
Motion Isolation: How Well Does it Handle Partner Movement?
If you share your bed, motion transfer will matter. Thanks to independently acting pocket springs and the memory foam layer, the 800 Mirapocket Memory Mattress keeps movement localised. Tossing and turning is mostly absorbed, meaning your partner’s restlessness won’t disturb your sleep as much.
This makes it a good choice for couples, even with different sleeping habits.
Temperature Regulation and Breathability
One minor downside of memory foam is its tendency to hold heat. However, the hybrid construction here—with springs allowing airflow beneath you—greatly helps with breathability. While not as cool as a dedicated cooling mattress, it doesn’t feel overly warm for most British sleepers.
If overheating is a concern, try a breathable mattress protector or bedding, or look at our best UK cooling mattresses for more specialist picks.
Who Should Look Elsewhere?
While versatile, this mattress won’t suit absolutely everyone. Consider alternatives if you:
- Prefer an ultra-soft or ultra-firm bed—this mattress is squarely in the middle.
- Sleep exclusively on your side and require maximum pressure relief (look for extra memory foam layers).
- Need high-edge support for sitting or sleeping right on the sides.
- Are over 18 stone or require reinforced mattresses (check specialist heavy-duty models).
- Want a fully natural or organic mattress (see Best Organic Mattresses instead).
Is It Good for Back and Joint Pain?
The combination of mid-firmness, pocket springs, and adaptive memory foam makes this bed popular with those suffering from occasional or ongoing back pain. It offers enough support to keep your spine aligned and plenty of cushioning to relieve “hot spots.”
For severe back pain, however, you may need a specifically designed orthopaedic mattress. Explore our guide to the best mattresses for back pain relief for more tailored help.
Allergy-Friendly Construction
The Silentnight 800 Mirapocket Memory Mattress is hypoallergenic and designed to minimise common allergens like dust mites. The materials are suitable for those with asthma or allergies, and the tightly woven cover can help keep your sleep area fresher.
If you want to add extra protection, consider pairing this mattress with a high-quality mattress protector.
Durability and Maintenance
Silentnight mattresses are manufactured to high standards, and the 800 Mirapocket Memory is no exception. Expect it to last at least 6–8 years with regular care.
- Rotating the mattress top-to-toe every couple of months helps maintain an even surface.
- The mattress is single-sided, so do not flip.
- Use a breathable protector for added lifespan and hygiene.
For more tips, check our guide on how to clean and freshen a mattress.
Delivery and Unpacking Experience
Buying the Silentnight 800 Mirapocket Memory Mattress online with Mattress Online is straightforward. The delivery timeline is usually prompt, and the mattress arrives ready to use. It does not come vacuum-packed in a box, so you won’t need to wait for it to expand.
There may be a slight ‘new mattress smell’ (off-gassing) from the memory foam at first, but this is normal and will usually dissipate within a couple of days. Good ventilation helps this process along.
See how other mattresses arrive and what to expect in our mattress delivery and setup guide.
Price and Value: Is It Worth Your Money?
The mattress retails for £444.95 (RRP £541)—offering decent value for a hybrid king size made by a top UK brand. While pricier than some all-foam or open-coil budget options, the 800 Mirapocket justifies its cost with better build quality, comfort, and durability.
You may find occasional discounts, especially during sale events. Check out our latest UK mattress deals to maximise your savings.
How Does It Compare to Similar Mattresses?
Hybrid mattresses blending pocket springs with foam are a mainstay in the UK market. The Silentnight 800 Mirapocket Memory sits just above entry-level in terms of support and comfort but is considerably more affordable than high-end models loaded with thousands of springs and luxury finishes.
Some alternative models worth exploring:
- For best overall value: Best UK Mattresses Compared.
- For higher spring count: Silentnight Sofia 1200 Mirapocket Mattress.
- For a pure memory foam feel: Silentnight Studio Memory Mattress.
- For a more traditional spring bed: Silentnight Miracoil Pillow Top Mattress.
If you want more in-depth comparisons, use our Mattress Comparisons hub.
Customer Feedback: What Do Owners Say?
Reviews for the Silentnight 800 Mirapocket Memory Mattress are generally positive. The combination of affordable price and targeted support is frequently praised. Owners often comment on how well the mattress relieves back pain and provides a comfortable night’s sleep for various sleeping positions.
Some negative feedback relates to firmness feeling a little too substantial for people under 9 stone, and side sleepers sometimes wishing for a bit more softness at the shoulders. However, most shoppers find the medium-firmness ‘just right’ after an initial break-in period.
Mattress Care and Longevity
This mattress should be rotated every 2 to 3 months to maintain an even feel. It is not double-sided and should not be flipped. We also recommend using flat, supportive bed bases or slatted frames (with slats no more than 7.5 cm apart) to avoid sagging. For more advice, check our bed frame compatibility guide.
Silentnight 800 Mirapocket Memory Mattress: Pros & Cons
- Pros:
- Hybrid construction offers the best of both spring and memory foam comfort
- Excellent price for a king size hybrid mattress
- Hypoallergenic and suitable for allergy sufferers
- Good pressure relief and body support
- Minimal partner disturbance
- Trusted UK brand with reliable delivery
- Cons:
- May not be soft enough for some pure side sleepers
- Edge support could be improved
- Not suitable for flipping—can be rotated head-to-toe only
- Memory foam can hold some heat (though not excessively so)
- Doesn’t offer adjustable firmness
Alternatives – Other Mattresses to Consider
You may also wish to read up on these options:
- Best Memory Foam Mattresses for deeper, softer comfort
- Best Hybrid Mattresses for the latest UK hybrid beds
- Best Budget Mattresses Under £500 for value buys
There are plenty of other detailed mattress reviews to help you compare based on your personal sleep profile, body weight, and preferred sleeping position.
Buying Advice: Is It the Right Mattress for You?
The Silentnight 800 Mirapocket Memory Mattress is a fantastic all-rounder for UK shoppers who want a trusted, mid-firm hybrid at a sensible price point. It’s especially well-suited to couples, back and front sleepers, and anyone seeking modern comfort without bells and whistles. If you prioritise pressure relief, everyday support, and reliable quality, this mattress is hard to beat for the price.
Conclusion: Our Verdict
This mattress is a reliable, cost-effective choice for many British homes. With its blend of 800 pocket springs, memory foam comfort, and hypoallergenic design, it’s engineered to provide restorative sleep for years. Whether you’re upgrading the master bedroom or furnishing a guest room, Silentnight’s 800 Mirapocket Memory Mattress holds up as a balanced, trustworthy option.
If you’re ready to enjoy better, healthier sleep, shop now for the Silentnight 800 Mirapocket Memory Mattress and make a smart investment in your nightly comfort.