Sealy Posturepedic Nurture Mattress, Firmer Tension, King Size

Exclusive to John Lewis

Sealy Posturepedic Nurture Mattress, Firmer Tension, King Size

Exclusive to John Lewis

  • 7 year guarantee included

Free standard delivery
Extended returns until 23 January 2024
Standard UK delivery within 7 weeks
  • Sealy's 60 Night Comfort Trial

    To claim on your comfort trial, please contact John Lewis Customer Services on 0345 610 0344. Please be sure to have your order details to hand.

    The below outlines the Terms and Conditions of the Comfort Trial. The Comfort Trial is facilitated by John Lewis and Partners.

    1. Comfort exchange is processed through John Lewis Customer Service
    2. One 60 night trial per household /delivery address is permitted.
    3. A recycling fee of £29.95 will be charged by John Lewis.
    4. The comfort trial will be on offer up to 60 nights from date of delivery.
    5. The customer must sleep on the mattress for a minimum of 30 nights.
    6. You must communicate with John Lewis that you wish to use the comfort trial offer before the 60th night.
    7. The Mattress can be exchanged with any other mattress available through John Lewis.
    8. If the new product is of higher value the difference will be paid by the customer.
    9. If the new product is lower value the customer will receive a refund for the difference from John Lewis.
    10. The product must be in a good and sanitary condition to be exchanged as part of the trial.
    11. The comfort trial offer ends once the new comfort exchange mattress is delivered to you.
    12. By taking part in this trial, you agree to use a mattress protector (the same size) which should be purchased on the same transaction as the mattress. You must also follow the care instructions delivered with your product to prevent your mattress becoming soiled or damaged.
    13. This is available on Sealy mattresses purchased after the 1st of September 2023.

Product description

Product code: 80000803

The Sealy Nurture Firm is the firmest mattress in the Posturepedic collection.

Uniquely designed and tested, the AlignSupport® has been carefully constructed and evolved over time to be a two stage spring. First, it senses your individual shape as you rest into the mattress, followed by an instant response that applies deep-down, consistent support. Also, you can sleep soundly knowing that the spring unit is twice tempered which means it’s twice as strong and durable. Securing everything in place.

UniCased® XT
UniCased® XT is a superior edge support that offers all of the benefits of Unicased®, with the addition of unique air channels to provide a more durable, responsive edge. Perfectly positioned around the mattress, UniCased® XT prevents lateral movement and provides a robust seating edge and together with BasePlank, offers greater breathability. BasePlank is the firm foundation that underpins the entire mattress, working to provide true support.

The foam ComfortCore™, placed in the centre third of the mattress, targets the heaviest parts of your body such as your hips and lower back. Combined with layers of firm and extra firm foams, the Nurture Firm mattress is perfect for those who prefer a firmer, robust feel.

Exclusive to John Lewis, Sealy have introduced a cleaner, greener fabric option: MultiLife® fabric is made from recycled materials for a comfortable, eco-friendly night’s sleep. Complete with SmarTex® and ProShield® for a clean and comfortable night’s rest. SmarTex® is designed to wick away moisture to regulate your sleep climate, whilst ProShield® keeps allergens at bay and aims to keep your mattress clean and fresh throughout its lifespan. Plus, it’s endorsed by Allergy UK.

Handmade in Great Britain.

Mattress Care
To prolong the life of your mattress and to ensure even wear, rotate it from head to foot regularly.

Try before you buy
This is an important purchase and it's worthwhile to try your choice of mattress in store to make sure it's right for you. Our store Partners will be able to tell you more about its benefits, and recommend options based on your needs. For more information, call 03452 661 805 and we can tell you where the range you?d like to view is on display.

Product specification
Care instructions
There is no need to turn this mattress but rotate it regularly from head to foot
77% second life polyester, 23% polyester
Country of Origin
L200 x W150cm x D30cm
Exclusive to John Lewis
Fabric Features
Anti-Allergy, Cooling, Hypoallergenic, Pilling Resistant, Sweat Resistant (Wicking), Temperature Regulating
Filling Composition
Furniture Range
Sealy Collection
Mattress Size
King Size
Mattress Turn
Rotate regularly
Mattress Type
Removable Cover
Side stitched
Tuft Type/Surface Finish
Delivery & returns
Standard Delivery
UK delivery by our supplier within 7 weeks. Where delivery needs to be arranged, you will be contacted to arrange a date and time that's convenient for you.
Click & Collect
Not available for this item
Local Collection Network
Not available for this item


Return small or medium items by post or to John Lewis & Partners and Waitrose & Partners shops.

Large items (delivered by two people, such as appliances and furniture) can be returned using our Home Collection service.

You can also return a Click & Collect order to where you collected it.

Our extended Christmas returns policy

We've extended our usual limit for returns just for the festive season. Any gift bought between 27 September 2023 and 24 December 2023 can be returned up until 23 January 2024, if it's unwanted or unsuitable.

Reviews |
Product review details, this product has received, on average, 5.00 out of 5 star rating.
The average rating is5out of5