Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
expireddaisybeetle | Staff posted Aug 16, 2021 02:43 AM
  1. Deal Image
Item 1 of 5
  1. Deal Image
  2. Deal Image
  3. Deal Image
  4. Deal Image
Item 1 of 5
expireddaisybeetle | Staff posted Aug 16, 2021 02:43 AM

King Mattresses: Beautyrest Silver BRS900 11.75" Medium Firm Mattress

& More + Free S&H

$405

$1,200

66% off
Mattress Firm
139 Comments 84,183 Views
Visit Mattress Firm
Good Deal
Save
Share
Deal Details
MattressFirm.com has Select King Mattresses on Sale. Save 25% Off Select King Mattresses w/ promo code KINGS25 (exclusions apply, test in cart). Shipping is free.
  • Note, if the add to cart button is grey instead of red, try using the drop down menu on the product page to switch sizes and then switch back to King or try using a different web browser.
Thanks to Deal Hunter daisybeetle for finding this deal.

Prices below after code KINGS25

Editor's Notes

Written by SlickDealio
  • About this deal:
    • The prices for King size mattresses are significantly lower than they were in this recent Popular Deal. For example the price of the Beautyrest Silver BRS900 11.75" Medium Firm Mattress is priced $75.01 lower than it was in that prior deal.
    • Availability for delivery may vary based on location.
  • About this store:
    • The MattressFirm FAQ is here and for details about mattress returns and exchanges click here.
      .

Original Post

Written by daisybeetle | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
MattressFirm.com has Select King Mattresses on Sale. Save 25% Off Select King Mattresses w/ promo code KINGS25 (exclusions apply, test in cart). Shipping is free.
  • Note, if the add to cart button is grey instead of red, try using the drop down menu on the product page to switch sizes and then switch back to King or try using a different web browser.
Thanks to Deal Hunter daisybeetle for finding this deal.

Prices below after code KINGS25

Editor's Notes

Written by SlickDealio
  • About this deal:
    • The prices for King size mattresses are significantly lower than they were in this recent Popular Deal. For example the price of the Beautyrest Silver BRS900 11.75" Medium Firm Mattress is priced $75.01 lower than it was in that prior deal.
    • Availability for delivery may vary based on location.
  • About this store:
    • The MattressFirm FAQ is here and for details about mattress returns and exchanges click here.
      .

Original Post

Written by daisybeetle | Staff

Community Voting

Deal Score
+60
Good Deal
Visit Mattress Firm

Leave a Comment

Unregistered (You)

Top Comments

Greygooser
2058 Posts
2247 Reputation
https://slickdeals.net/f/15197443-paypal-store-offers-save-40-on-purchayse-of-400-at-mattressfirm-ymmv?utm_source=iphone_app&utm_medium=share&utm_campaign=external+share

Check Paypal for offers $ off Mattress Firm. I had $80 off $400. Also use discover via Paypal for another 5% off, and 7% cashback from G*iving Ass*stant
oniserva
374 Posts
110 Reputation
The KINGS25 code worked on the Serta Perfect Sleeper Elkins II 11" Plush Euro Top Queen Mattress. Subtotal went from $699.99 retail, to $349.99 sale to $262.49 with code. Add tax and free delivery and it felt pretty slick. They don't remove old mattress without the $99 upgraded delivery/set up option. I guess you can't win them all, thanks for the find!
adirondackman
4034 Posts
1034 Reputation
NIGHTOWL cannot be stacked with KINGS25

138 Comments

Sign up for a Slickdeals account to remove this ad.

Aug 16, 2021 03:56 AM
144 Posts
Joined Sep 2017
Swarup0000Aug 16, 2021 03:56 AM
144 Posts
Thank you i missed the last sale!
Aug 16, 2021 04:06 AM
11,653 Posts
Joined Feb 2011
mojohnnybravoAug 16, 2021 04:06 AM
11,653 Posts
damn those are some good deals wish i saw this a week earlier
Aug 16, 2021 04:06 AM
723 Posts
Joined Feb 2009
DitchAug 16, 2021 04:06 AM
723 Posts
Do the firm and extra firm need a box spring? I have a platform bed with slats and am looking for something firm that doesn't require a box spring.
1
Aug 16, 2021 04:22 AM
37 Posts
Joined Mar 2020
HotGamrChckAug 16, 2021 04:22 AM
37 Posts
There is another promo, NIGHTOWL that you can stack I assume shopping for it after a certain time.
Aug 16, 2021 04:31 AM
55 Posts
Joined Oct 2015
aravindhosurAug 16, 2021 04:31 AM
55 Posts
What is their return policy on these sale mattresses? Can't find it on the product page.
Aug 16, 2021 05:07 AM
672 Posts
Joined Aug 2015
malaysiafangAug 16, 2021 05:07 AM
672 Posts
Quote from aravindhosur :
What is their return policy on these sale mattresses? Can't find it on the product page.
curious as well
Aug 16, 2021 05:13 AM
468 Posts
Joined Nov 2011
vathanakAug 16, 2021 05:13 AM
468 Posts
Any thoughts comparing this to Casper mattresses?
1

Sign up for a Slickdeals account to remove this ad.

Aug 16, 2021 05:16 AM
620 Posts
Joined Sep 2017
NojisticAug 16, 2021 05:16 AM
620 Posts
Quote from vathanak :
Any thoughts comparing this to Casper mattresses?
New to the mattress game as well. Looking for a Cal King, any suggestions??
1
Aug 16, 2021 05:20 AM
49 Posts
Joined Dec 2019
WildplumbAug 16, 2021 05:20 AM
49 Posts
Kick myself for buying a split-king (2 twin xls). Never find good deals on replacements. And the cheap sheet sets only fit twin beds.
1
Aug 16, 2021 05:21 AM
167 Posts
Joined Oct 2012
Tiddlywinks22Aug 16, 2021 05:21 AM
167 Posts
Quote from aravindhosur :
What is their return policy on these sale mattresses? Can't find it on the product page.
https://www.mattressfirm.com/matt...anges.html ....Read the fine print...restocking fee and just exchange....
Aug 16, 2021 05:22 AM
1 Posts
Joined Nov 2018
rsromanoffAug 16, 2021 05:22 AM
1 Posts
120 Night Sleep Trial- return delivery - $99 - 10% restocking, rest applied to new mattress, etc.
"Mattress Return and Exchange Policy | Mattress Firm" https://www.mattressfirm.com/matt...anges.html
Aug 16, 2021 05:25 AM
4,034 Posts
Joined Dec 2013
adirondackmanAug 16, 2021 05:25 AM
4,034 Posts

Our community has rated this post as helpful. If you agree, why not thank adirondackman

Quote from HotGamrChck :
There is another promo, NIGHTOWL that you can stack I assume shopping for it after a certain time.
NIGHTOWL cannot be stacked with KINGS25
1
Aug 16, 2021 05:56 AM
58 Posts
Joined Mar 2011
davygoatAug 16, 2021 05:56 AM
58 Posts
this guy named calvin said you can cancel up until delivery and there is no restocking fee due to nothing to restock.
2
Aug 16, 2021 06:41 AM
4,614 Posts
Joined Jan 2007
ngocbeAug 16, 2021 06:41 AM
4,614 Posts
Ah I need queen 😞
1

Sign up for a Slickdeals account to remove this ad.

Aug 16, 2021 06:48 AM
374 Posts
Joined Nov 2014
oniservaAug 16, 2021 06:48 AM
374 Posts
The KINGS25 code worked on the Serta Perfect Sleeper Elkins II 11" Plush Euro Top Queen Mattress. Subtotal went from $699.99 retail, to $349.99 sale to $262.49 with code. Add tax and free delivery and it felt pretty slick. They don't remove old mattress without the $99 upgraded delivery/set up option. I guess you can't win them all, thanks for the find!

Leave a Comment

Unregistered (You)

Related Searches

Free ShippingHome & Home ImprovementBed & BathMattressesCouponBeautyrestMattress Firm

Popular Deals

View All
Found by
$26$3013% offHome Depot: Defiant 3000 Lumens Rechargeable Magnetic Utility Light With Power Bank (2-Pack ) $26 (reg. 30) Clearance YMMV in store
18
Found by
$200$27025% offVIOFO A229 Plus 3 Channel Dash Cam, Dual STARVIS 2 Sensors, 3-Channel HDR, 1440P+1440P+1080P Front Inside and Rear Car Camera, 5GHz Wi-Fi $199.99
3
Found by
$17$4057% offColumbia Helvetia II Hip Pack Bag (Black) $16.97 + Free Shipping w/ Prime or on $35+
0
Found by
$4.08$6.2434% off12-Count 2.25-Oz Maruchan Instant Lunch Ramen Noodle Soup (Hot & Spicy Beef, Lime Chili w/ Shrimp) $4.08 + Free Shipping w/ Prime or on $35+
2
Found by
$450$59924% off$449.99: 128GB 11" Apple iPad Air M3 Wi-Fi Tablet (2025, Various Colors) at Amazon
0

Trending Deals

View All
Found by
$8.99$1850% off3-Piece 54-Oz Serentive Stainless Steel Non-Slip Dog Bowl Set $8.99 ($2.99 each) + Free Shipping w/ Prime or on $35+
0
Found by
$2.503 pack Bunch O Balloons Reusable Animal Water Balloons, $2.50 FS for Walmart + or free pickup, Walmart
2
Found by
Costco October 2025 Coupon Book (9/22/25 to 10/19/25)
0
Found by
$300Apple Watch Series 10 (GPS) 46mm Sport Band $299.97
2
Found by
$2.82$4.9943% off[S&S] $2.82*: 10-Oz Skinnygirl Sugar Free Preserves (Raspberry) at Amazon
8