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      Coolflex® Hybrid CHILL Mattress

      4.9 out of 5
      (63)
      (3)
      (1)
      (1)
      (0)

      Experience refreshing sleep with optimal cooling and personalised comfort for your best night ever.

      2000 Pocket Springs
      Cool Gel Memory Foam
      37cm Depth
      Firmness: Medium
      £399
      RRP £519
      Save £120
      Hurry, this offer ends in 0 days 0hrs 0mins
      from £399

      Size

      Single 3' x 6'3"
      £399 RRP £519
      In stock
      Small Double 4' x 6'3"
      £449 RRP £579
      Only 1 left
      Double 4'6" x 6'3"
      £449 RRP £579
      In stock
      King Size 5' x 6'6"
      £499 RRP £649
      4-5 Weeks
      Super King 6' x 6'6"
      £599 RRP £779
      In stock

      FREE Delivery within Next Day Estimated delivery from

      FREE delivery Tomorrow, 13th June

      This product combination is unavailable.
      Out of stock

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      ​Coolflex®​ 5 Year Guarantee

      ​Coolflex® mattresses are made with the most meticulous of care, but in the very unlikely event that something should go wrong as a result of faulty material or craftsmanship, you're covered by a generous 5 year guarantee.

      Download warranty/guarantee information

      100 Night Sleep Trial icon
      100 Night Sleep Trial

      Finding the perfect mattress shouldn't be stressful. That's why we offer a generous 100 night sleep trial. Snuggle in and test it out for at least 50 nights. If it's not your perfect match we’ll offer you an exchange for a mattress that you love even more.

      Delivering a better night’s sleep

      We are proud to provide our award-winning Free Next Day Delivery service to almost everywhere across mainland UK, sending a proper night’s sleep out far and wide.

      Hassle-free and convenient, you can choose a date and time that suits you if you prefer, and get us to deliver straight to your room of choice!

      For some addresses, a small fee will be charged to help us get you your best night’s rest as quickly as possible. To see if this applies to you, or if we’d be unable to deliver to you, just check our Postcode Checker.

      Returns made simple

      Sleep is personal, so we understand that sometimes you may want to return an item you’ve purchased from us for an exchange or refund.

      To make things go as smoothly as possible if you do decide to return, make sure that you check your item(s) when they arrive before signing for delivery.

      In the unlikely event of a problem, just give our friendly, award-winning Customer Service team a call, but do note that if you want to return your item to us, you will be responsible for arranging it and for the cost. For more information, head to our Returns page.

      Old Mattress Removal

      For just £39, our fast and friendly team will collect your old mattress at the exact same time we deliver your new one. No waiting, no heavy lifting, and no clutter. 100% of your old mattress is carefully recycled and kept out of landfill. Simply select 'Old Mattress Removal' at checkout.

      Our Sustainability Efforts

      We’re proud to be partnered with Ecologi, the UK’s leading climate platform, to help us plant trees and fund environmental projects across the globe, protecting the world’s rainforests and helping those in need.

      Our #SustainableSnooze campaign also highlights our journey to becoming a Net Zero company, keeping as many old mattresses out of landfill, and making positive steps in our internal processes to become as green as possible.

      Read more about why this is important to us and the milestones we’ve achieved on our Sustainability page.

      Rated Excellent

      4.9/5
      based on 68 reviews
      Trustpilot star rating
      Quality of product
      4.9 / 5
      Comfort Rating
      4.9 / 5
      Value for Money
      4.9 / 5
      93%
      4%
      1%
      1%
      0%

      Customer Review Summary

      Customers have generally expressed satisfaction with the product, often praising its exceptional comfort and support, which have contributed to better sleep quality and reduced discomfort during the night. Many users appreciate the high-quality materials and construction, associating them with durability and a premium feel. However, some reviewers noted that the product may be firmer than they expected, a characteristic that some appreciated for its supportive qualities. Overall, this product is well-regarded for enhancing the sleep experience while maintaining a strong emphasis on quality.

      Excellent Comfort
      Firm Support
      Durable Materials
      Enhances Sleep Quality
      Premium Feel
      Firmer Than Expected

      Reviews with images

      A customer photo for Coolflex® Hybrid CHILL Mattress - Right, lets get straight to it: this mattress is an absolute belter. Im not sayi. Author: Customer. Dated: 2025-07-27
      A customer photo for Coolflex® Hybrid CHILL Mattress - Great sleep very heavy and thick proper mattress comfy great springs for support. Author: Michael Musgrove. Dated: 2025-10-04
      Trustpilot Star rating Verified

      This Matress is very comfortable and well made. The only reason I gave 4 stars and not 5 is the chilling element of it is not really felt.

      Daz B 5th Jun
      Trustpilot Star rating Verified

      Held off review until I had a few weeks usage, at first I wondered if the cool flex tech was a bit too efficient, after an urgent call to the loo I found the snuggling down to the warm spot was far less easy than my old mattress however I soon got used to it. Now that we've just endured a mini heat wave the value of the cool flex has really been obvious no more waking up covered in sweat. Only regret it's too thick

      Michael F 24th May
      Trustpilot Star rating Verified

      Really firm but comfy, I got this one as its 37cm thick so about the width of 2 normal singles on top of each other as thats what I was replacing

      James Garner 11th May
      Trustpilot Star rating Verified

      Really thrilled with this mattress, always a difficult item to purchase but I read reviews and used mattressman website.

      Linda 10th Apr
      Trustpilot Star rating Verified

      Needed a new as the one I had was 7 years old and uncomfortable, this new one is amazing im a side sleeper and its so comfortable no longer wake up with aching shoulders and hips

      Caitlin Ainsley 9th Apr
      Trustpilot Star rating Verified

      Beautiful mattress, it felt a little hard initially but after a few nights we adjusted well. I love that it is not your standard white which stains easily but is a lovely deep grey colour . We feel its very good value for money and would recommend this mattress.

      Miss Catherine Delaney 8th Apr

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      151,970+ Trees planted so far

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      Planet-friendly disposals

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      Coolflex® Hybrid CHILL Mattress

      Coolflex® Hybrid CHILL Mattress

      £

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