Silentnight Geltex Ultraflex 3000 Mattress & Full Ottoman Divan in Slate Grey, 2 Firmness Ratings in 3 SizesSilentnight Geltex Ultraflex 3000 Mattress & Full Ottoman Divan in Slate Grey, 2 Firmness Ratings in 3 Sizes
Ultraflex full ottoman greyUltraflex full ottoman grey
Ultraflex full ottoman greyUltraflex full ottoman grey
Ultraflex full ottoman greyUltraflex full ottoman grey
Ultraflex full ottoman greyUltraflex full ottoman grey

Silentnight Geltex Ultraflex 3000 Mattress & Full Ottoman Divan in Slate Grey, 2 Firmness Ratings in 3 Sizes

Item #SNUltraflex3000FullOttSlate

Starting at£1,149.99
Shipping Included

- Available in Double, King & Super King

- Full Ottoman Base

- Headboard not included

- Silentnight Geltex Ultraflex 3000 Pocket Mattress

- Comfort Rating: 2 Firmness Ratings

- Pocket Spring


Please Note:

To receive a sample swatch of the divan fabric, contact with your name, address and the item description that corresponds with your selection. 
Disposal service available at checkout.

We will contact you within 2 business days for delivery within 10 business days from the date of your order (excluding weekends and bank holidays). Postcode restrictions may apply. Find out more in the Delivery & Returns Tab below

Your credit/debit card will be charged when your order is placed on this item.


The Silentnight Geltex Ultraflex 3000 mattress combines Geltex with Ultraflex – a layer of 1000 responsive mini-springs – to create an advanced comfort layer which offers unrivalled support, luxurious comfort and greater breathability to prevent overheating and ensure a cooler, fresher night's sleep.

This Geltex Ultraflex comfort layer works in harmony with Silentnight’s trademark Mirapocket spring system to give you the best possible sleeping experience. Mirapocket is a double-layered pocket spring system which features 2000 individually nested springs that respond independently to your weight and movement for truly tailored support.

Practical and stylish, the full ottoman divan base offers the ultimate storage solution. Helping you maximise your bedroom space without compromise on comfort or design. 

Unparalleled Breathability

Many people fail to enjoy a full and deep night's sleep because of uncomfortable overheating. Geltex has a unique open cell structure which provides unparalleled breathability, allowing air to pass through easily, preventing the body from overheating.

Perfect Pressure Relief

A unique fusion of gel molecules, foam crystals and air cells makes Geltex extremely flexible and adaptable. These advanced flexible properties distribute body weight evenly, preventing pressure points from building, helping to reduce the discomfort of aching joints and circulatory problems.

Optimal Body Support

Innovative elasticity ensures immediate spring back for ultimate support and comfort. As no two individuals are the same, Geltex responds to the individual contours of the body, providing perfect spinal alignment and support throughout the night.


  • Available in 2 firmness ratings: Medium Soft / Medium Firm
  • Advanced 11cm box top comfort layer features Geltex & Ultraflex 1000 mini springs for unrivalled support, luxurious comfort & greater breathability
  • Supported by Silentnight’s Mirapocket spring system featuring 2000 individually nested springs
  • Mattress Depth: 36cm
  • Single Sided: No need to turn, simply rotate at least once every 3 months
  • Storage: Full ottoman divan
  • Handmade in the UK

Please Note: Listed spring counts are based on a king size mattress. The number of springs will alter on a pro-rata basis dependent on mattress size.

Please email to receive a sample swatch of the divan fabric. Please include your name, address, phone number and the item description that corresponds with your selection.

TypeOttoman Divan
Mattress FirmnessMedium/Firm
Special FeaturesGeltex
No Turn
Mattress IncludedYes
Mattress TypePocket Spring
Headboard IncludedNo
StorageFull Ottoman
CollectionGeltex Ultraflex 3000
  •   Delivery is via a 2 person carrier and includes delivery to a room of your choice, packaging removal and full assembly. Our carrier will contact you via phone, text or email.
  •   We offer an additional service to remove your old mattress and divan when your new one is delivered, ensuring that it will be responsibly recycled. The mattress must be in a hygienic condition, and if left outside, must be dry. Please be aware that once we have taken away your old mattress and divan, it is non-returnable. If you require this disposal service, it can be added to your order on our checkout page.
  •   Additional day(s) transit may be required for remote areas.
  •   Public and Regional holidays may affect delivery lead times.
  •   Delivery times may vary in the event of adverse weather conditions.
  •   Please note that we are only able to deliver to the UK mainland, excluding Post Office boxes and BFPO.
  •   Further postcode delivery restrictions might apply to this item.
  •  We are committed to offering the best value to our members, with a satisfaction guarantee on both your membership and merchandise. If you have questions about your membership or products you've purchased at Costco, please contact our Customer Care team.
  •  If you wish to return an item, please view Costco's Return Policy.
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  •  Items purchased online can be returned at any of our UK warehouses if you are a warehouse member.
  •  Many of our small items can be returned via “My account” on the website and printing a return label. This label must be attached to the box being returned.
  •  Please securely pack the items you intend to return in a box. If you are using the original packaging, be sure to remove the delivery label.
  •  If you need to return a larger item, please contact our Member Care team via the chat function on our website or call 0800 0324 324.
  •  Find out more about our Delivery, Cancellations and Assistance Policy
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