Labor Day Sale On King Size Extra Firm Mattresses

Labor Day savings on king size extra firm mattresses make it easier than ever to upgrade your sleep space. Discover exceptional offers on supportive options designed for those who prefer a firmer feel. Whether you’re refreshing your primary bedroom or creating a guest retreat, now is the perfect time to find the comfort and value you’ve been searching for. Enjoy more restful nights and start every day feeling recharged with a new king size extra firm mattress during our Labor Day event.

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Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3244

Starting at

$660⁹⁹

$1700⁹⁹

$1040 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature, Pain, Allergies, Bed Partner, Toss and Turn, Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1771

Starting at

$805⁹⁹

$2000⁹⁹

$1195 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature, Pain, Bed Partner, Toss and Turn, Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress

863

Starting at

$1050⁹⁹

$1399⁰⁰

$349 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain, Temperature, Bed Partner, Toss and Turn, Toss and Turn
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Sleep Excellence Extra Firm Mattress

924

Starting at

$2000⁹⁹

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain, Toss and Turn, Pain, Temperature, Bed Partner
Toss and Turn
Pain

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest PressureSmart 2.0 Extra Firm 13.5" Mattress

2185

Starting at

$1450⁰⁰

$2900⁹⁹

$1450 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature, Bed Partner, Pain, Toss and Turn, Toss and Turn
Temperature
Bed Partner

FREE ADJUSTABLE BASE ³ with code ELEVATE

Stearns & Foster Estate 13.5" Extra Firm Mattress

1021

Starting at

$2799⁰⁰

$2999⁰⁰

$200 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain, Bed Partner, Temperature, Toss and Turn, Toss and Turn
Pain
Temperature

Receive $300 Instant Gift⁴ with purchase.

Stearns & Foster Lux Estate 13.5" Extra Firm Mattress

862

Starting at

$3399⁰⁰

$3799⁰⁰

$400 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain, Bed Partner, Temperature, Allergies, Toss and Turn, Toss and Turn
Pain
Temperature

Receive $300 Instant Gift⁴ with purchase.

Beautyrest Black Series One 13.5" Extra Firm Mattress

659

Starting at

$2599⁰⁰

$2899⁰⁰

$300 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain, Allergies, Bed Partner, Toss and Turn, Toss and Turn
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Dreamcloud PressureSmart Technology Extra Firm Pillow Top Mattress

122

Starting at

$1799⁰⁰

$2549⁰⁰

$750 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain, Bed Partner, Temperature, Toss and Turn, Toss and Turn
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Posturepedic Plus Norman II 13" Ultra Firm Mattress

Starting at

$1399⁰⁰

$1899⁰⁰

$500 OFF

Extra Firm Comfort, best for

Back Sleepers
Pain, Allergies, Pain, Bed Partner, Toss and Turn
Allergies
Pain

Receive $200 Instant Gift⁴ with purchase.

Sealy Posturepedic Elite Brenham II 14" Ultra Firm Mattress

Starting at

$2399⁰⁰

$2499⁰⁰

$100 OFF

Extra Firm Comfort, best for

Back Sleepers
Pain, Temperature, Allergies, Bed Partner, Toss and Turn
Temperature
Allergies

Receive $200 Instant Gift⁴ with purchase.

Kingsdown Wesley 15" Extra Firm Mattress

Starting at

$4199⁰⁰

$4799⁰⁰

$600 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain, Bed Partner, Temperature, Toss and Turn, Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Take advantage of Mattress Firm’s incredible Labor Day event on king size extra firm mattresses, where unbeatable prices and premium comfort go hand in hand. This year’s promotions feature deep discounts on top-rated brands, letting you upgrade your bedroom with a spacious king size mattress that delivers robust, reliable support. If you crave a mattress designed for optimal spinal alignment and minimal sagging, an extra firm king size mattress is the perfect solution. Ideal for back and stomach sleepers, these mattresses help relieve pressure points and ensure consistent comfort all night long.

During our Labor Day event, shopping for a king size extra firm mattress means exclusive savings and special financing options on customer-favorite styles. Enjoy advanced materials like high-density foam layers or reinforced innerspring systems that combine breathability with lasting durability. Whether you’re looking to reduce motion transfer or seeking enhanced lumbar support, Mattress Firm’s expertly curated collection ensures you’ll find the best mattress for your unique needs—at a value that only comes around once a year. Don’t miss this limited-time opportunity to experience restful sleep on a spacious, supportive king size extra firm mattress while enjoying the lowest prices of the season.

What are the benefits of choosing an extra firm mattress for my bedroom? + -

Extra firm mattresses provide enhanced support, especially for back and stomach sleepers. They help maintain proper spinal alignment and can reduce pressure on the lower back, making them a popular choice for those who prefer a sturdy sleeping surface.

How does an extra firm mattress differ from other firmness levels? + -

An extra firm mattress offers minimal sinkage and a solid feel compared to medium or plush options. This type of mattress is designed to keep your body elevated and supported, which can be beneficial for people who need more support while sleeping.

Who should consider sleeping on an extra firm mattress? + -

Extra firm mattresses are ideal for people who sleep on their backs or stomachs, as well as those with heavier body types who require additional support. They can also be suitable for individuals who experience back pain and need a stable surface.

Are extra firm mattresses compatible with adjustable bed bases? + -

Yes, many extra firm mattresses are designed to work with adjustable bed bases. However, it's important to check the manufacturer's recommendations to ensure compatibility with your specific base.

What materials are commonly used in extra firm mattresses? + -

Extra firm mattresses are often constructed using high-density foams, innerspring coils, or a combination of both. Some may also feature latex layers for added durability and support.