Mattress Firm Seattle Warehouse (Sumner) logo

Mattress Firm Seattle Warehouse (Sumner)

Mattress Firm

Sumner, WA

4.1(66 reviews)
9 active offers6 store perks
DLX Mattress advertisement. Buy direct from the mattress maker and save $500.

Advertisement

About Mattress Firm

Mattress Firm offers a wide selection of mattresses from top brands, including Tempur-Pedic, Purple, Sealy, and Sleepy's. They provide various promotions, such as the Memorial Day Sale with up to 60% off, and offer financing options like 0% interest with equal monthly payments on qualifying purchases. Customers can enjoy free and fast delivery, a low price guarantee, and a 120-night sleep trial. All mattresses are assembled in the U.S.

Current Promotions
Last updated Oct 23, 2026

Current homepage sales include up to $700 off, a free adjustable base with select mattresses, select price-point and bundle offers, clearance mattresses up to 70% off, $300 instant gifts, and an extra 15% off qualifying purchases.

  • Black Friday Sale: Save up to $700Expires: 2026-12-08Savings vary by product and model; valid only on models indicated; product selection may vary by store.
  • Free adjustable base with select mattressesSelect mattresses.
  • Queen beds under $500Queen beds.
  • Sleepy's By Sealy Spring Luna Euro Top mattress and adjustable base bundle
  • Any size for $249.99 on select mattressesSelect mattresses.
  • Up to 70% off select clearance mattressesSelect clearance mattresses; while supplies last.
  • $300 instant gift toward a total sleep solution
  • $300 instant gift on select Purple mattressesSelect Purple mattresses.
  • Get an extra 15% offQualifying purchase; available online or in-store.
Purchase Incentives
  • 0% interest with 72 equal monthly paymentsQualifying purchases with Mattress Firm credit card; subject to credit approval. For 60- and 72-month in-store purchases, taxes and delivery fees must be paid upfront.
  • Free and fast delivery
  • Free & Fast Delivery
  • Financing & Leasing
  • Low Price Guarantee
  • 120 Night Sleep Trial
Mattress Selection

Brands

Tempur-Pedic
Purple
Sealy
Sleepy's

Ideal for

teens
growing children
adults

Technology

memory foam
hybrid
innerspring

Assortment

Box Springs & Frames
Adjustable Bed Bases
Bedding
Furniture & More

Price range

$
$$
$$$
$$$$

Estimated price positioning for this store

What Your Neighbors Say

Real Google reviews from nearby shoppers

See all reviews

Average rating 4.1 · 66 reviews

Last updated Nov 23, 2025

Sam Mlvn· 5★ · a month ago

Came in, resolved all my issues in 10 minutes, left... excellent service

View on Google
Thenoypi1· 1★ · a year ago

Today 8/29, This is the worst experience I’ve had, website told me delivery was 8/28 but never received it waited all day, talk to there live chat told me allow 5-14 more days wth. Then got an email saying packages is in there warehouse waiting for pick up, went there a sign that says customer pick up at 10am-8pm, it’s 6pm I hear people inside I’m ringing the bell multiple times no answer. Mattress firm do better, all I want is a day when will it arrive or pick up so I can plane accordingly this is very unprofessional wish your company was honest with your information, I wasted my time just to get my mattress, a customer don’t deserve this treatment. I will cancel my order.

View on Google
Michael Savage· 5★ · a year ago

Our entire experience with the mattress firm was fantastic, we bought our purchase from the Olympia store but they didn't have the base in stock so we had to go here to get it. Service was quick and helpful, it took about ten minutes from the time we walked in. This will be our go too if we ever need a mattress again.

View on Google
Gonzalo Canseco· 1★ · 2 years ago

This place does not deserve a single star I checked in at 6:15 for a 07:00 delivery and delivery was very strict to the appointment. The skinny guy that checks you in needs a little bit of customer service skills. I checked with him around 07:48 what was going on,why am I not being unloaded yet. He said they are working on it……it is 9:48 am and still nothing yet. There is overnight parking. Restrooms are inside the facility,receiving office is where customers pick up their mattresses. As a truck driver they hold you up here for a little while. Good luck!

View on Google
Dylan Shriner· 1★ · 3 years ago

The dude made a lame excuse to not fill my order after I already drove over there. Said he couldn’t get my mattress because they were “short staffed”. He said they were “closed” at 3pm when the website said they were open until 7pm. The dude told me to just come back tomorrow after I was already there with my neighbors truck that I borrowed. I was just picking up a twin mattress. It’s not that hard smh

View on Google
More Mattress Firm locations
Other mattress stores near Sumner

See all mattress stores in Sumner, WA