Sanitized King Mattresses

Sanitized King Mattresses offer a spacious option for sleepers who want more room to stretch out and get better zzz's. Explore a range of king-size mattresses to find the right fit for your bedroom, sleep style and comfort preferences, then make sleep easy™ with Mattress Firm.

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Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3302

Starting at

$709⁹⁹

$1699⁹⁹

$990 OFF

Extra Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 11.25" Firm Mattress

2239

Starting at

$619⁹⁹

$1299⁹⁹

$680 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tulo Bamboo 10" Medium Green Tea Memory Foam Mattress

5567

Starting at

$379⁹⁹

$889⁹⁹

$510 OFF

Medium Comfort, best for

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

Tulo Bamboo 12" Medium Plush Green Tea Memory Foam Mattress

5567

Starting at

$429⁹⁹

$1019⁹⁹

$590 OFF

Medium Comfort, best for

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

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1868

Starting at

$819⁹⁹

$1499⁹⁹

$680 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1816

Starting at

$859⁹⁹

$1999⁹⁹

$1140 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1749

Starting at

$809⁹⁹

$1099⁹⁹

$290 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 12" Plush Euro Top Mattress

739

Starting at

$569⁹⁹

$1399⁹⁹

$830 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

Beautyrest Silver BRS900 12" Plush Mattress

1147

Starting at

$729⁹⁹

$1699⁹⁹

$970 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple Restore 11.5" Soft Hybrid Mattress

1666

Starting at

$2700⁰⁰

$3399⁰⁰

$699 OFF

Plush Comfort, best for

Side Sleepers
Pain
Allergies
Bed Partner
Toss and Turn
Temperature

Purple RestorePlus Cool Touch 13" Hybrid Mattress

1005

Starting at

$3900⁰⁰

$4699⁰⁰

$799 OFF

Medium Comfort, best for

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

$300 ^◇ adjustable base instant gift with purchase.

Purple RestorePremier Cool Touch 13" Hybrid Mattress

856

Starting at

$4700⁰⁰

$5499⁰⁰

$799 OFF

Medium Comfort, best for

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

$300 ^◇ adjustable base instant gift with purchase.

Beautyrest Silver BRS900-C 14.5" Medium Mattress

795

Starting at

$859⁹⁹

$1999⁹⁹

$1140 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple Restore Cool Touch 11.5" Hybrid Mattress

790

Starting at

$3000⁰⁰

$3699⁰⁰

$699 OFF

Medium Comfort, best for

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

$300 ^◇ adjustable base instant gift with purchase.

Beautyrest BR800 Greenwood 10.5" Firm Mattress

3405

Starting at

$1299⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Bed Partner
Toss and Turn
Temperature
Pain

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple Restore 11.5" Firm Hybrid Mattress

843

Starting at

$2700⁰⁰

$3399⁰⁰

$699 OFF

Firm Comfort, best for

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

Sealy Posturepedic Elite Hybrid High Point II 14" Soft Mattress

544

Starting at

$2799⁰⁰

$3099⁰⁰

$300 OFF

Plush Comfort, best for

Side Sleepers
Pain
Temperature
Allergies
Bed Partner
Toss and Turn

Receive $200 Instant Gift⁴ with purchase.

Sealy Posturepedic Pro Hybrid Lacey II 13" Firm Mattress

366

Starting at

$2049⁰⁰

$2749⁰⁰

$700 OFF

Firm Comfort, best for

Back Sleepers
Pain
Temperature
Allergies
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tulo Green Tea 12" Plush Mattress

Starting at

$459⁹⁹

$1399⁹⁹

$940 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Tulo Green Tea 10" Medium Mattress

Starting at

$1249⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

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

$300 ⁶ adjustable base instant gift with purchase.

Sleepy's Signature TOTAL DEFENSE Mattress Protector

5735

Starting at

$129⁹⁹

Temperature
Allergies

Save $100 when you bundle¹⁰.

Sleepy's Deluxe Comfort Cool Mattress Protector

4229

Starting at

$189⁹⁹

Temperature
Allergies

Save $150 when you bundle¹⁰.

Sleepy's By Sealy Memory Foam Medium Mattress

3503

Starting at

$589⁹⁹

$889⁹⁹

$300 OFF

Medium Comfort, best for

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

Sleepy's Signature Total Encasement Mattress Protector

1004

Starting at

$159⁹⁹

Temperature

Sleepy's Rest Firm 2.0 Innerspring Mattress

7007

Starting at

$449⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

A sanitized king mattress offers generous sleeping space while helping create a cleaner, more comfortable sleep environment for couples, families and anyone who enjoys extra room to stretch out. Many king mattresses feature breathable covers, moisture-wicking fabrics and antimicrobial or treated materials designed to help manage odors and reduce the buildup of common household allergens between cleanings. Options range from memory foam and hybrid mattresses to innerspring and cooling king mattresses, so shoppers can choose the right balance of pressure relief, airflow, support and surface comfort. Look for reputable construction, removable or washable covers where available and clear care instructions to help keep a sanitized king-size mattress feeling fresh for longer. Proper mattress care is an important part of maintaining a clean sleep setup. Use a mattress protector to help shield a king mattress from spills, sweat, dust and everyday wear, and wash bedding regularly according to the manufacturer’s instructions. Vacuum the mattress surface and surrounding bedroom area with an appropriate attachment, allow the mattress to air out during routine linen changes and avoid applying household disinfectants unless the care label specifically permits it. Mattress Firm offers king mattresses in a variety of comfort levels and materials, making it easier to find a supportive, breathable option that fits your sleep preferences while supporting a fresh and inviting bedroom.

What does sanitized mean for a king mattress? + -

A sanitized king mattress has undergone a treatment or production process designed to support a cleaner sleep surface. Details can vary by manufacturer, so review the product description for the specific method used.

What materials are available in sanitized king mattresses? + -

Sanitized king mattresses can be made with a range of materials, including memory foam, innersprings, latex and hybrid combinations. Choose the construction that matches your preferred feel and support.

How do I care for a sanitized king mattress? + -

Use a mattress protector, follow the care instructions provided by the manufacturer and keep the sleep surface dry. Regularly wash removable bedding according to its care label.

Can sanitized king mattresses have different comfort feels? + -

Yes. Sanitized king mattresses are available in comfort feels ranging from plush to firm, with options in between. Consider how much cushioning and support you prefer when comparing models.

What should I look for when choosing a sanitized king mattress? + -

Compare the mattress construction, comfort feel, support design, cover materials and care instructions. Reading the product details can help you find an option that fits your sleep preferences.