Silentnight 5cm Mattress Topper - Kingsize
152/5216£150.00
Bed size: King Size
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About this product
Add a layer of body-responsive comfort to your bed with this memory foam mattress topper that moulds to your shape and supports pressure points. The 5cm deep memory foam responds to your unique contours, helping to ease aches by gently cushioning your spine and muscles as you rest. It's designed to fit king size beds with a fitted style that grips securely without shifting around, and the soft cover adds an extra layer of comfort against your skin. The foam adjusts gently to your movements throughout the night, providing consistent support that works with how you naturally sleep.
The removable cover unzips easily, so you can pop it in the wash at 40C when it needs refreshing. The memory foam filling keeps its shape and supportive feel night after night, bouncing back after use without going flat. It fits neatly over your existing mattress without any complicated setup, making it simple to add extra comfort to your bed. Whether you're looking to extend the life of an older mattress or add cushioning to a firmer surface, this topper delivers practical support that helps improve your sleep comfort.
Part of the Silentnight Memory Foam Bedding collection.
- Suitable for king size beds.
- Cover made from 100% polyester.
- 100% viscoelastic memory foam filling.
- Memory foam.
- Fitted.
- Cover is machine washable at 40C.
- EAN: 5012701401531.
Returns
If you want us to collect an unwanted small item after delivery, it costs £3.95 or you can return it to any store for free. You won’t be charged if the item is faulty, or if it was delivered by a supplier.
4.5
1401 reviews
91%
Recommended this product
Customers Say
Comfortable memory foam topper improves sleep and reduces back pain, but some users report strong initial smell and issues with corner straps slipping or breaking.
An AI generated summary based on recent customer reviews
Each review is verified as authentic by our independent third party and we only publish reviews from customers or Argos Testers who have purchased or used the item. Customers are incentivised to submit product reviews as part of a prize draw.
perfect
it’s so worth the money, bought it around christmas and slept incredibly well since
uma1, 18 - 24
Really Comfortable
AMAZING. Feels like a new bed. Back pain gone.
Felix
Comfortable but needs regular adjustment
We bought this a few weeks ago to help improve the comfort of our firm mattress. It has improved our comfort whilst maintaining the firmness of our mattress. The only negative is the corner straps which don’t hold the topper in place very well so we have to keep readjusting to keep it in place.
Alex, 35 - 44
Comfy
Really comfortable but needed a couple of days to lose its creases from being in the bag.
Shopper, 35 - 44
Luxury topper
Thick and comfortable topper. Great for stopping pressure points at hips.
jimbob, 55 - 64
Comfy when slept on a few times
Bought a few months ago. Took time to adjust too but overall comfy.
Nel1, 55 - 64
Poor quality
Had it a month,all the corner securing straps have now snapped and it floats round the bed, On its way back to Argos as I type
Gazz, 55 - 64
Soooo Comfy!!
Took a few hours for the creases to come out and it to rise to 5cm. It’s done wonders for our sleep! No more back ache! And no more pressure on my hips from our firm mattress. Slight chemical smell to start with but after a couple of days that wore off. Highly recommend!!
Lolly1962, 55 - 64
Very comfortable and great value
Bought this last month after a few nights it was very comfortable
Sandie, 65 or over
Not good
Made no difference waste of money better to use the money towards a new mattress. I chucked this in the recycling.
Taz6060, 55 - 64
Hello Nerys,
After checking with our supplier, they have advised for the Silentnight 5cm Mattress Topper - Double: ''This topper is completely 5cm depth of memory foam, with a removable cover. It is flat on both sides, the cover has a non slip base at the bottom.''
Thank you for using Q and A.
Hello PR,
The supplier has advised the following for the Silentnight 5cm Mattress Topper - Double:
"Double size is - 135 cm x 190 cm approx."
Thank you for using Q&A.
Hi Monica,
The dimensions of the Silentnight 5cm Memory Foam Topper - Double is 190 x 135 x 5 cm.
Thank you for using Q&A
Hello Storm,
The supplier has advised the following for the Silentnight 5cm Memory Foam Topper - Single:
This is flat on both sides, it just has a non slip base at the bottom of the cover and easy fit straps.
Thank you for using Q&A.
Hi Dave
Silentnight 5cm Memory Foam Topper - Single:
The dimensions are:
Width 90cm
Length 190cm.
Thank you for using Q&A.
Hi RM,
Silentnight 5cm Memory Foam Topper - Kingsize 152/5216
The dimensions of the packaging are 58 x 49 x 32 cm and approximate weight 6.44kg
Thank you for using Argos Q&A
Hi KB
Having checked both the Silentnight 5cm Memory Foam Topper and the Silentnight Impress Memory Foam 7cm Mattress Topper:
The only difference is the 2cm and the size of the beds that they can be acquired in.
The 5cm can be bought in Single, Double and King Size.
The 7cm can be bought in Double, King Size and Super King
Hope this helps
Thank you for using Q&A.
Hi Jay J,
The Silentnight 5cm Memory Foam Topper - Double, does have a zip. This shows on picture 5 on the web site.
Hope this helps.
Thank you for using Q & A
Hi Legs11,
The Silentnight 5cm Memory Foam Topper - Kingsize goes on top of the mattress first then the mattress protector on top of that.
Thank you for using Q&A.
Hello there
The Silentnight 5cm Memory Foam Topper - Single cannot be used as a replacement attress but can be used as a topper and can be stored away easily when not in use.
I hope this helps
Thanks for using Q&A
The small print
*Prices correct as displayed but are subject to change.
The customer and brand answers you’ll see above are submitted independently. As we don’t review these answers, we can’t take responsibility for anything they may say. The responses from Argos colleagues are accurate at the time of publishing. For the latest info, you should check the product page.