Beautyrest Black

Series Three 15" Firm Mattress

Beautyrest Black Series Three 15" Firm Mattress

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Overall

#175 in

Mattress

according to Reddit Icon Reddit

Sentiment score65% positive
11
2
4
Last updated: Jun 22, 2026

Reddit Reviews

Reddit Iconfivedice_allthrees
4 months ago

I’ve tried a few and now I have the beautyrest black series 3 firm and I really like it. It’s not too firm at all with all the latex and memory foam. I almost feel like I could have gone extra firm

4 months ago

Not yet but I’ve only had it since October

8 months ago

I ended up with a beautyrest black series 3 after saatva classic, saatva contour 5, and Leesa chill. I think I am gonna keep it

8 months ago

I found the Leesa chill to be not supportive enough and my boyfriend and I were sinking to the middle and waking up with hurt backs. I got the beautyrest black series 3 in firm because I really didn’t want anything like that to keep happening and I think it’s a good combo of firm support but luxury and soft top. But it’s made well too so maybe the medium wouldn’t be too bad if you like it softer.

7 months ago

I have EDS and arthritis and the firm is still good for me. It has like 6 inches of latex and memory foam on top of the springs so it’s comfy

Reddit IconFuzzy-Peach948
7 months ago

I bought the beautyrest series 3 firm and love it so much! I tried the avocado as well at their store and found it much softer in comparisson. The BR black series 3 also uses 1.5" latex, foam and  has the pocketed coils they are known for. I would go with BR over avocado. 

7 months ago

I bought the beautyrest series 3 firm and love it so much! I tried the avocado as well at their store and found it much softer in comparisson. The BR black series 3 also uses 1.5" latex, foam and  has the pocketed coils they are known for. I would go with BR over avocado. 

Reddit IconOdd_Arachnid_3981
8 months ago

We bought a BRB series 3 firm recently and like it!

4 months ago

We also have the BRB series 3 firm since August and love it! It’s broken in very nicely.

5 months ago

We love our Beautyrest Black Series 3! Purchased a firm in August and it’s broken in nicely. I bet the medium or firm would feel comfy! Definitely lay on it if you can.

Reddit IconRehabilitatedAsshole
7 months ago

If money's not an issue, the Beautyrest Black has been fantastic for my back, but you should try them out in the store. https://www.mattressfirm.com/black-series-three-15-firm-mattress/5637497862.p?variantid=5637498768

Reddit IconSupportSuccessful525
4 months ago

We just got an outlet beautyrest black series 3 firm for $1800. So we did pay $800 more, but it’s a 4.5k mattress and we can already tell the difference. Good luck!

Reddit Iconking8654
about 2 months ago

our ten year old beautyrest black international firm has served us well, but lately has been starting to sleep more as a soft/medium. as a stomach sleeper and wife side sleeper, we went with ezsleep talalay/dunlop/dunlop with split sides/firmness layers for our king, comes in tomorrow. personally love latex pillows, figured i’d try this out could check out underground mattress forums as well for best vendors and knowledgeable people

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