Beautyrest Harmony Lux Diamond Medium Mattress
Beautyrest Harmony Lux Diamond Medium Mattress for Sale

Beautyrest® Harmony Lux Diamond Medium Mattress

(16 customer reviews)


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Size Guide

Single XL: 39″ x 80″ x 17″
Queen: 60” x 80” x 17″
King: 76” x 80” x 17″

Product Features

The brand new Beautyrest Harmony Lux Diamond Series Medium Pillowtop 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
  • Advanced Pressure Relief – The combination of SURFACETOUCH gel memory foam, BEAUTYREST gel foam, MICRO DIAMOND memory foam and BEAUTYREST support 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. Oscar

    Perfect balance between plush and firm. I am a heavier person and I sleep on my sides. This medium mattress has really helped me with my lower back pain. Thank you to sleep masters for this mattress.

  2. Katherine & Paul

    My husband and I don’t agree on much, but we certainly both approve with this mattress. It’s so comfortable and so supportive. You must try it to understand!

  3. Mesic

    Really high quality product and the perfect comfort level for me.

  4. Justin

    This is my 2nd mattress from Sleep Masters and again it is just beautiful. If you are someone who enjoys a medium comfort level this is probably the best mattress you can buy.

  5. Lee

    Purchased this for my son and he has mentioned how much he loves it non stop for a week. So I guess it’s good!

  6. Julie

    I waited for a couple of weeks before I review this mattress but this has gotten better with every night. Now I feel that my body has fully adjusted to my new mattress and I am sleeping better than ever!

  7. Robert

    Without a doubt the best mattress I have ever owned. A fair price when compared to other placed too.

  8. Sandra

    Very comfortable mattress and a fair price point. Service was also great. Really satisfied with my purchase.

  9. Kiersten

    We are very happy with this mattress and we have been sleeping great every night.

  10. James

    Bought this mattress for our master bedroom and it really stands out! Also very comfortable too!

  11. Chad M.

    Very good mattress and good service that we received from Sleep Masters. Thank you guys.

  12. Mary

    I am really impressed with this mattress and especially the cooling effect. No more hot nights in bed.

  13. Tracey

    So comfortable that I am sleeping throughout the night. Only downfall is difficulty getting up in the morning!

  14. Zane C

    well constructed medium to firm with a nice pillow top, very happy

  15. Tyler

    Excellent night sleep every single night.

  16. Erica M

    We had a temperature issue with our old mattress where it was making us too hot. We switched over to this Beautyrest mattress and not only is it really comfortable, it’s also helping us stay cool all night.

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