Silentnight Geltex 4000 MattressSilentnight Geltex 4000 Mattress
Silentnight Geltex 4000 MattressSilentnight Geltex 4000 Mattress
Silentnight Geltex 4000 MattressSilentnight Geltex 4000 Mattress
Silentnight Geltex 4000 MattressSilentnight Geltex 4000 Mattress
Silentnight Geltex 4000 MattressSilentnight Geltex 4000 Mattress
Silentnight Geltex 4000 MattressSilentnight Geltex 4000 Mattress
Silentnight Geltex 4000 MattressSilentnight Geltex 4000 Mattress

Silentnight Geltex 4000 Pocket Boxtop Mattress in 4 Sizes

Item #SNGeltex4000Matt

Starting at£579.99
Shipping Included
  • - Available in Single, Double, King & Super King
  • - Comfort Rating: Medium
  • - Mattress Depth: 38 cm
  • - 2000 Mirapocket Springs with Additional 2000 Mini Springs 
  • - Gel-infused Comfort Layer

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.

Silentnight Latex 2000 Pocket Boxtop MattressSilentnight Latex 2000 Pocket Boxtop Mattress 

Introducing the Geltex® 4000 Pocket Boxtop Mattress from Silentnight. A gel-infused comfort layer that actively responds to your body as you sleep, allowing you to toss and turn without sleep disturbance. Perfect for twisters and turners.

Featuring Silentnight's exclusive Geltex® layer which actively responds to your body as you sleep, for easy movement and 'bounce-back' to help you feel energised, every morning with more ‘get up and go’. The gel infused comfort layer distributes body weight and pressure evenly, for soothing pressure relief. Geltex® is also incredibly breathable compared to memory foam, so it allows for a more refreshing and cooler night’s sleep.

The Geltex 4000 Pocket Boxtop combines two layers of 1000 Ultraflex mini-springs for enhanced comfort and personalised support, alongside Silentnight's exclusive Mirapocket® spring system. A double layer of 2000 individual pocket springs and additional 2000 mini-springs respond independently to weight and deliver tailored support where you need it most. The 2000 mini-springs and the Geltex layers are combined in a deep boxtop for the ultimate deluxe mattress, which is hand tufted for a slightly firmer feel.


  • Sleep Surface: Hand-tufted boxtop for a firmer comfort level & added back support
  • Comfort Filling: Intelligent Geltex™ filling with exceptional breathability for a cooler sleep
  • Support System: Mirapocket® support system along with two additional layers of mini-springs offers even weight distribution to assist easy movement & improve spinal alignment
  • Firmness Rating: Medium
  • Mattress Depth: 38 cm
  • Single Sided: No need to turn, simply rotate, at least once every 3 months
  • Hypoallergenic: Provides a cleaner & fresh sleeping environment
  • Made in the UK
  • 5-year warranty

CollectionGeltex 4000
Mattress FirmnessMedium
Special FeaturesGeltex
No Turn
Mattress TypePocket Spring
  •   Delivery is performed by 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. Please note if a lift is unavailable we will only deliver up to 2 flights of stairs.
  •   Please check you have enough clearance space and a clear path with access to get the item from the delivery vehicle to the final destination. Delivery requires access to the final destination without requiring a mattress to be bent more than 40 degrees in order to avoid damaging the mattress internal structure.
  •   Delivery is subject to reasonable access to the area without damaging the customer's property or the product, or jeopardising the safety of the delivery personnel. The recipients must be home at the time of delivery. An adult of 18 years or older will need to be present during the delivery.
  •   We offer an additional service to remove your old like-for-like product when your new one is delivered, ensuring that it will be responsibly recycled. The item must be in a hygienic condition, and if left outside, must be dry. Please be aware that once we have taken away your old product, it is non-returnable. If you require this disposal service, it can be added to your order on our checkout page.
  •   Where a removal service has been chosen, we ask that all the bedding is removed from the existing bed in advance of the delivery team's arrival. Mattress, divan and headboard disassembly will be performed by the team, but we ask that bed frames are dismantled in advance of the delivery team arrival.
  •   All items are made to order once a delivery date has been selected. Items are not available to be delivered ahead of the advertised delivery lead time.
  •   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.
  •   Costco Concierge Services | Technical Support
    Free technical support exclusive to Costco members for select electronics and consumer goods.
  •  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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