Beautyrest Harmony Lux Carbon Extra Firm Mattress for Sale

Beautyrest® Harmony Lux Carbon Extra Firm Mattress

(43 customer reviews)


Sleep Master Canada

Estimated delivery on 2 - 6 October, 2023


Simmons Beautyrest

Harmony Lux Carbon Extra Firm Mattress

Beautyrest® Harmony Lux™ Carbon Series features the latest innovations in support, comfort, and cooling that work together in harmony for a better night’s sleep. Its new and innovative coil design and support system, advanced pressure relieving foams, uniquely engineered cooling technologies and exclusive sustainable fabric technology makes this collection the ultimate choice in premium bedding. Featuring the RightTemp™ Wave Foam, the Harmony Lux™ Carbon Series sleeps cool and comfortable all night.

Key features within the Beautyrest® Harmony Lux Carbon Mattresses include:

  • Precision Support System™ powered by T2 Pocketed Coil™ Technology
  • RightTemp™ Wave Foam, SurfaceTouch™ Gel Memory Foam, and Micro Carbon Memory Foam
  • InfiniCool™ Lux Cooling System
  • SEAQUAL™ Sustainable Fabric



Ontario: 7-10 Business Days

All Other Provinces: 10-14 Business Days

  1. Par S.

    I purchased this mattress from sleep masters online without testing it out in person so I was a little worried at first but now I know I made an excellent choice. This was exactly what I was looking for, so happy with it.

  2. Emilia

    Honestly the best firm mattress I have ever had

  3. Janice & Chris

    We are sleeping like a baby every night! So comfortable and I would certainly purchase again and again. Hopefully it keeps it’s shape for a long time!

  4. Rosy C.

    I love it! If you also like an extra firm mattress you will love it too! Highly recommend.

  5. Justin

    This mattress i just perfect for me. I wanted a high quality firm mattress but for it still to be comfortable. This mattress does it all for me!

  6. Leila

    Very happy with this mattress. I have been using it for 3 months now and so far no problems at all!

  7. Quyen

    Really good quality mattress and the service was also great. Will continue to order from Sleep Masters Canada.

  8. Paris

    The best sleep I have ever had. I am a slightly heavier person and I love firm mattresses. This is the best one I have had yet.

  9. Katrina

    I love extra firm mattresses and this is the best extra firm mattress I have owned.

  10. Rhonda

    Purchased this mattress for my daughter and she loves it so much!

  11. Christine

    This is AMAZING. I never thought how much changing our mattress would change our lives. We are both getting undisturbed sleep and we are not rolling towards eachother. So nice and firm which feels great on my back too.

  12. Hee K.

    Firm but comfortable at the same time. Just what I was looking for.

  13. Angela

    A great nights sleep every night, I am really impressed.

  14. Frances

    IF you like a firmer mattress, you are going to love this mattress SO much! It just feels amazing!

  15. Alex K

    Great value for a mattress off this quality and comfort.

  16. Gustavo

    Firstly, I would like to say thank you to you guys for helping me find this mattress. I now have a King size which is great because my wife and I have plenty of space to sleep. The mattress is perfect and just how we wanted it. Thanks guys.

  17. Rachlynn

    We could not of asked for a better sleep and we really enjoy it!

  18. Agnes W.

    We needed a firmer mattress which was also really comfortable at the same time. After trying out a few different models we decided on this beautyrest and so far it is great!

  19. Shawna O

    My hubby and I are really happy with this mattress and definitely recommend it.

  20. Allen B

    Excellent mattress and excellent service. The delivery was on time and I highly recommend this product.

  21. Gina M

    I am a very happy customer! This is the perfect mattress for me and all my back pain is now gone.

  22. Marlene W

    I’ve tried a few extra firm mattresses in the past which always works best for me but I believe this one has been the best so far.

  23. Sandra S

    Love my new mattress

  24. Teneil

    It is a really good mattress and really comfortable too! Maybe a little too comfortable haha, I was actually expecting it to be even firmer.

  25. Vanessa

    I’ve been using this mattress for a few weeks now and I definitely have been sleeping a lot better than before. Also my back has felt a lot better in the mornings. It worked for me.

  26. Linda W

    Since I purchased this mattress I have been getting a consistent 8 hours of sleep without being disturbed at all

  27. Amrit

    I am very happy with my final choice, it’s the perfect firmness for me and feels great on my back.

  28. Shumaila

    I am totally satisfied with the comfort and quality of the mattress and also their delivery service was great. They took the mattress right up the stairs, into my bedroom and onto the platform bed.

  29. Alan

    Can’t find any faults about it, very satisfied.

  30. Linda D

    Loving this firm mattress

  31. Tyrell M

    I’m a back sleeper and I was told I need a firmer mattress for my back but I usually don’t like rock hard mattresses. After trying this one, I knew it was the right choice because it is firm but somehow it still feels very comfortable on my back. Good choice!

  32. Kim

    I am over the moon with my selection and I will be recommending these guys to all my family and friends. Not just the mattress but the service was also second to none. Thank you guys.

  33. Sue N

    This is the absolute most incredibly comfortable mattress we have owned. No pressure points. Just sweet sleep that I’ve been missing out on for years.

  34. Russ

    It’s a wonderful mattress to get into every night, yet a difficult one to get out of every morning 🙂

  35. Nick K

    It’s for sure a really good mattress and the service we got was incredible I just thought the mattress could have been a little firmer as it does say extra firm.

  36. Candace S

    Super happy with my new extra firm mattress and you just do not find service like these guys provide anymore. Set it up on my frame and also removed my old mattress. Fantastic!

  37. Raman

    After purchasing 3 mattresses’ from big name brand stores and being completely unsatisfied, we tried Sleep Masters. Finally found the mattress we were looking for. Firm, yet soft, no off gassing and ready to use immediately. Thank you so much Sleep Masters! Excellent service.

  38. Georgia

    The hype is real, the reviews are accurate. The comfiest mattress I’ve ever slept on!

  39. Rafi

    Tried it in the store first along with a couple other extra firm mattresses and decided with this option. Ended up purchasing a Queen and King and we are very satisfied with it.

  40. Maia

    Very pleased with this mattress as it is difficult to find an extra firm mattress which is still comfortable and also cool at the surface. This mattress ticks all the boxes.

  41. Lee I

    Love this mattress, it is firm and exactly what I was looking for. I would recommend to others.

  42. Jean G

    When it says ‘extra firm’ I really expect it to be like a rock. It is incorrectly labelled if you ask me. It’s firm but it’s not ‘extra firm’ like it says in the name

  43. Debbie

    I am mostly happy with the mattress as it is at the moment but I did expect it to be firmer as it is labelled extra firm. For now I can’t complain about the firmness too much but I do worry that maybe in a year or two it will soften up and then it really won’t be extra firm.

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