Silentnight Comfort Miracoil Mattress, Kingsize

Product information

This comfy mattress is competitively priced and combines generous filling with Miracoil spring system. The Miracoil spring system boasts continuous open spring technology. This means the springs form a steady coil shape and provide a more acute response to pressure. This diminishes roll together between partners, providing intuitive responses to varying levels of pressure. The support system runs through the entire length and width of the mattress, which maximises the supportive sleep space for a more comfortable night’s sleep.

Key features

  • 3 zone Miracoil support system for firm and responsive support and comfort
  • Knitted quilt top gives a softer surface feel
  • Edge to edge support for maximum sleep space
  • Polyester filling

Please note: We recommend you visit one of our shops and try out your mattress choice before ordering online. Not all of our Furniture ranges are on display at every branch. Please phone your nearest John Lewis to check before you visit.

EU Ecolabel


The EU Ecolabel is only applied to products which are kind to the environment. Any product carrying it has to meet tough criteria concerning the highest environmental and performance standards throughout its life cycle.

Interest Free Credit: If you buy this product in our shops, it's eligible for Interest Free Credit, which is available when you spend £1000 or more on selected home products. Terms and conditions apply: find out more

Extend the life of your new mattress with a durable and breathable mattress protector..

Country of Origin
H22 x W150 x D200cm
Eligible for International Delivery
Exclusive to John Lewis
Mattress care Information ‘No turn’ indicates that the mattress should not be turned over or flipped. ‘Rotate regularly’ indicates that the mattress should be rotated from head to toe, but not turned over or flipped.
Turn regularly
Mattress Size
Mattress tension
Mattress Type
Open Spring
Side stitched Information Hand or machined
Spring count
Tick composition
60% Polyester, 40% Polyproylene
Tuft Type/Surface Finish
Quilted surface finish
Weight Information Unpackaged weight


UK mainland delivery within 7 working days; may be longer for N Ireland, island and rural postcodes


International delivery not available


We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.


Mattress & Divan Recycling

The charge for this service includes the removal and recycling of mattresses and divans only, and not bedsteads or headboards.

Please note that we reserve the right to refuse to collect any item we believe constitutes a health and safety risk to our employees, or anyone working on our behalf.

Mattresses and divans will be broken down into their constituent parts and around 98% of this material will be sold for re-use.

Q & As

Rated 4.5 out of 5 by 4 reviewers.
Rated 5 out of 5 by Comfortable and value for money A firm but comfortable mattress - very good value. 28 July 2015
Rated 4 out of 5 by Great value Having bought the single version of this for my sons' beds and found them very comfortable, I was happy to buy the king-sized version for our bed. It is a great price for a quality mattress. It is however a little harder than anticipated but for me firmer is better than too saggy. 03 March 2015
Rated 4 out of 5 by High quality, very firm mattress Excellent usual John Lewis service with ordering and delivery. The mattress is a little too firm for me but really suits my husband and gives his back the support he needs. Amazing price. 11 October 2014
Rated 5 out of 5 by amazing value delivered within 4 days of ordering. If you're looking for a firm mattress for a good price this is perfect. Really comfortable and well made. Extremely pleased with purchase and sleeping soundly. 13 June 2014
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