Beautyrest Harmony Lux Carbon Extra Firm Mattress
Beautyrest Harmony Lux Carbon Extra Firm Mattress for Sale

Beautyrest® Harmony Lux Carbon Extra Firm Mattress

(21 customer reviews)


Sleep Master Canada


Size Guide

Single XL: 39″ x 80″ x 12″
Double: 54” x 74” x 12″
Queen: 60” x 80” x 12″
King: 76” x 80” x 12″

Product Features

The brand new Beautyrest Harmony Lux Carbon Series Extra Firm mattress available at Sleep Masters Canada. With the all new design, here are some of the key new features:

  • Cool Sleep – The new INFINICOOL LUX technology provides a cool sleep surface throughout the night ensuring that you fall and stay asleep
  • Consistent Pressure Relief – The combination of RIGHTTEMP wave foam, BEAUTYREST gel foam and FIRM comfort foam provides an ultra-strong, highly conductive and supportive feel night after night
  • Precision Support System – The use of T2 Pocketed Coil technology features a dual-stranded coil for additional support in the long run.

Warranty & Returns

10 Year-Non-Pro-Rated Warranty

At Sleep Masters Canada, all of our mattresses are covered under full manufacturers warranty. However, depending on the brand and the model of mattress, the warranty period and type could be different. We will always stick by your side to promptly have your mattress repaired or even replaced with the manufacturer, if you have any issues.

• Find our Complete Warranty Policy.


Exchange & Returns Policy

You may return and get a full refund minus $75 for a restocking fee on any mattresses within 30 days of a delivery or an in-store purchase, providing the product is in its original condition.
Our main priority is that you are satisfied with your decision. This is why, we are more than happy to offer a 100 night sleep trial on most of our mattresses. Within this period, if you are unhappy with your selection, we are happy to exchange your mattress with any other mattress!

•  Find our Complete Mattress Exchange or Return Policy.

Delivery Policy

Mattress Delivery & Shipping Policy

This mattress is available and we provide free delivery within the Greater Toronto Area Only. 
Your order will be delivered to you via our very own delivery professionals, in our own trucks.

Orders placed in-store or online will be delivered within 3-7 business days.
Same-day delivery is available on most orders placed before midday.
Please call us to check for same-day delivery availability.

  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.

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