Upgrade your bed with the Slumberdown Niva® Gel Memory Foam Mattress Topper, designed to add soothing comfort while helping you sleep more comfortably through warmer nights. The gel-infused memory foam gently moulds to your body to cushion pressure points, while the cooling gel technology helps draw away excess warmth for a fresher, more comfortable sleep. Ideal for summer, warmer sleepers, or anyone who finds standard foam toppers too hot. At 5cm deep, this mattress topper adds a supportive layer of comfort without feeling bulky, helping to revive an old, firm or tired mattress without the cost of replacing it. The body-hugging memory foam gives you that gently cushioned feel, while still allowing your fitted sheet to sit neatly over your mattress. The breathable knitted cover adds a soft, fresh feel, while the mesh sidewalls help airflow move through the topper, reducing the trapped heat that can build up with standard foam. It is a great choice for year-round comfort, giving you extra cushioning in colder months while helping you feel fresher and more comfortable when temperatures rise. Made in the UK with quality materials, this topper is CertiPUR® certified and made without harsh chemical flame retardants, giving you added reassurance every night. It is also hypoallergenic, making it a suitable choice for sensitive sleepers. The removable cover can be unzipped and machine washed at 40°C, helping you keep your topper fresh and clean. Four secure elasticated corner straps help keep it firmly in place on your mattress, reducing slipping, bunching and movement through the night. You may notice a new foam smell when first unpacked; this is normal for memory foam and should fade after 24-48 hours of airing in a well-ventilated room.
Knitted Cover: 40 degree machine wash. Dimensions: Single L190cm x W90cm, Small Double L190cm x W120cm, Double L190cm x W135cm, King L200cm x W150cm.
Free delivery on all order over £50 (exc. Bulky Item Delivery)
Super Saver Delivery
£2.99
Standard Delivery
£3.99
Express Delivery
£5.99
Next Day Delivery
£6.99
24/7 InPost Locker | Shop Collect
£2.49
Evri ParcelShop
£3.99
Evri ParcelShop | Express Delivery
£5.99
Premium DPD Next Day Delivery
£6.99
Bulky Item Delivery
£4.99
Northern Ireland Super Saver Delivery
£2.99
Northern Ireland Standard Delivery
£4.99
Unlimited free delivery for a year with Unlimited Delivery for £14.99
Please note, some delivery methods are not available for products delivered by our brand partners & they may have longer delivery times.
For hygiene reasons, we cannot offer returns or refunds on fashion face masks, cosmetics (including beauty products), pierced jewellery, vitamins and supplements, medicines, toiletries, swimwear or lingerie and adult toys if the product or item has been used, if the hygiene or product seal has been broken or is no longer in place or if the product is not in its original packaging (if applicable), unless faulty.
Items of footwear and/or clothing must be unworn, unwashed with the original labels attached. Items of homeware including bedlinen, mattresses and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights. Also, footwear must be tried on indoors.
Click here to view our full Returns Policy.
Upgrade your bed with the Slumberdown Niva® Gel Memory Foam Mattress Topper, designed to add soothing comfort while helping you sleep more comfortably through warmer nights. The gel-infused memory foam gently moulds to your body to cushion pressure points, while the cooling gel technology helps draw away excess warmth for a fresher, more comfortable sleep. Ideal for summer, warmer sleepers, or anyone who finds standard foam toppers too hot. At 5cm deep, this mattress topper adds a supportive layer of comfort without feeling bulky, helping to revive an old, firm or tired mattress without the cost of replacing it. The body-hugging memory foam gives you that gently cushioned feel, while still allowing your fitted sheet to sit neatly over your mattress. The breathable knitted cover adds a soft, fresh feel, while the mesh sidewalls help airflow move through the topper, reducing the trapped heat that can build up with standard foam. It is a great choice for year-round comfort, giving you extra cushioning in colder months while helping you feel fresher and more comfortable when temperatures rise. Made in the UK with quality materials, this topper is CertiPUR® certified and made without harsh chemical flame retardants, giving you added reassurance every night. It is also hypoallergenic, making it a suitable choice for sensitive sleepers. The removable cover can be unzipped and machine washed at 40°C, helping you keep your topper fresh and clean. Four secure elasticated corner straps help keep it firmly in place on your mattress, reducing slipping, bunching and movement through the night. You may notice a new foam smell when first unpacked; this is normal for memory foam and should fade after 24-48 hours of airing in a well-ventilated room.
Knitted Cover: 40 degree machine wash. Dimensions: Single L190cm x W90cm, Small Double L190cm x W120cm, Double L190cm x W135cm, King L200cm x W150cm.
Free delivery on all order over £50 (exc. Bulky Item Delivery)
Super Saver Delivery
£2.99
Standard Delivery
£3.99
Express Delivery
£5.99
Next Day Delivery
£6.99
24/7 InPost Locker | Shop Collect
£2.49
Evri ParcelShop
£3.99
Evri ParcelShop | Express Delivery
£5.99
Premium DPD Next Day Delivery
£6.99
Bulky Item Delivery
£4.99
Northern Ireland Super Saver Delivery
£2.99
Northern Ireland Standard Delivery
£4.99
Unlimited free delivery for a year with Unlimited Delivery for £14.99
Please note, some delivery methods are not available for products delivered by our brand partners & they may have longer delivery times.
For hygiene reasons, we cannot offer returns or refunds on fashion face masks, cosmetics (including beauty products), pierced jewellery, vitamins and supplements, medicines, toiletries, swimwear or lingerie and adult toys if the product or item has been used, if the hygiene or product seal has been broken or is no longer in place or if the product is not in its original packaging (if applicable), unless faulty.
Items of footwear and/or clothing must be unworn, unwashed with the original labels attached. Items of homeware including bedlinen, mattresses and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights. Also, footwear must be tried on indoors.
Click here to view our full Returns Policy.
Extend your warranty and protect your purchase against accidental damage and defects.
Protects your new Cooling Gel Memory Foam Topper Mattress Topper against breakdowns and faults once the manufacturer's warranty period is over.
Covers issues not included in your manufacturer's warranty, such as accidental damage or theft.
Get a replacement or a cash refund up to the full amount you originally paid for it.
FAQs
XCover is an authorised protection provider for Debenhams, with over 7 million customers globally and an average 4.7 out of 5 stars from thousands of reviews on Google and Trustpilot. XCover's simple, fast and stress-free repair and replacement process delivers peace of mind if your item is stolen or it has damages or defects that aren't covered by the manufacturer's warranty.
XCover's simple, fast and stress-free repair and replacement process delivers peace of mind if your item is stolen or has damages or defects that aren't covered by the manufacturer's warranty. XCover’s easy, digital process is simple with quick payouts on approved claims.
Before submitting a claim, you need to gather all the details and documents to support your claim. This helpful article has a guide to what documents you may need based on your claim reason.
When you're ready to submit your claim, log in to your XCover Account, select the XCover Protection you would like to claim for and then select ‘Make a Claim’.
The XCover claims process is quick and hassle-free, with payment or reimbursement for approved claims processed instantly. The dedicated team at XCover aims to complete 95% of claims within 3 days of claim submission, so keep a close eye on your emails to ensure there’s no delay.
For more information about claims submission, please check XCover Help.