Silentnight Comfort Miracoil Mattress, King Size

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.

0% APR Representative: 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
King 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 delivery

    Delivered within 7 working days (may be longer for N Ireland and rural areas)
    Find out more
  • 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 4.8 out of 5 by 9 reviewers.
Rated 5 out of 5 by Comfortable Really good value for money - very comfortable - very pleased. Only complaint - could do with some grab handles to assist when turning the mattress. 13 March 2016
Rated 5 out of 5 by Good mattress Delivered as arranged within days of ordering. Great mattress really comfortable and firm 08 March 2016
Rated 5 out of 5 by Great nights sleep So happy with this mattress. Very firm. Great service as expected with anything bought from John Lewis 07 January 2016
Rated 5 out of 5 by Money well spent We cannot believe that the price we paid for this mattress is so comfortable. Now realise how badly we needed a new mattress. This one is firm, but comfortable, I use to toss and turn, and now am getting a really good nights sleep. The bonus is that it was so reasonable in price, yes am glad we made the decision to go with this one, based on other reviews. John Lewis were easy to deal with, took the old one away for a small fee. I wouldn't recommend the 2-9pm slot as the delivery turned up at 9.30 at night which I didn't think was on. That was the only thing that let John Lewis down! 01 December 2015
Rated 5 out of 5 by Very Comfortable. If you like firm mattresses, this is the one for you! 01 December 2015
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
  • 2016-05-23 T12:52:50.775-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_9, tr_9
  • loc_en_US, sid_231619298, prod, sort_default
2 Next>
Mattresses Buying Guide
Mattresses Buying Guide

Choose the right level of support for a better night's sleep


  • 5 year guarantee included

Product code :


Additional services

Find out more

More than 10 in stock