Firm Expandable Mattresses

Discover the perfect balance of comfort and support with our selection of firm expandable mattresses. Ideal for those who crave a stable sleeping surface, these mattresses provide the durability and firmness you need for a restful night's sleep. Whether you're outfitting a guest room or upgrading your own sleep experience, firm expandable mattresses offer versatility and reliability to suit any bedroom setting. Explore options that cater to your unique preferences, ensuring you wake up refreshed and ready to tackle the day.

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Beautyrest PressureSmart 2.0 Firm 11" Mattress

Starting at

$880⁹⁹

$1350⁹⁹

$470 OFF

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Sleepy's Basic Memory Foam Firm Mattress

2719

Starting at

$300⁷⁷

$1000⁹⁹

$700 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain;Bed Partner;Temperature;Toss and Turn
Support
Temperature

Sleepy's Basic Innerspring Firm Mattress

8317

Starting at

$300⁹⁹

Firm Comfort, best for

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

Sleepy's Rest Firm 2.0 Innerspring Mattress

6687

Starting at

$1430⁹⁹

Firm Comfort, best for

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

Beautyrest Greenwood 10.5" Firm Mattress

3332

Starting at

$380⁹⁹

$950⁹⁹

$570 OFF

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest BR800 11.25" Firm Mattress

2060

Starting at

$615⁹⁹

$1300⁹⁹

$685 OFF

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Pressuresmart MF 12.5" Firm Mattress

217

Starting at

$1900⁹⁹

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Tulo Lavender 6" Firm Memory Foam Mattress

214

Starting at

$350⁹⁹

Firm Comfort, best for

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

Sealy Essentials Spruce 5.5" Firm Mattress

1366

Starting at

$260⁹⁹

$650⁹⁹

$390 OFF

Firm Comfort, best for

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

Beautyrest Black Series Three 15" Firm Mattress

1700

Starting at

$4499⁰⁰

Firm Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Purple RestorePlus 13" Firm Hybrid Mattress

1659

Starting at

$3149⁰⁰

Firm Comfort, best for

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

Beautyrest PressureSmart 2.0 Hybrid Firm 13" Mattress

1277

Starting at

$2050⁹⁹

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to 499 value with code ELEVATE (must add base to cart)

Tempur-Pedic TEMPUR-LuxeAdapt 13" Firm Mattress

1272

Starting at

$5399⁰⁰

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Beautyrest PressureSmart 2.0 Extra Firm 13.5" Mattress

2024

Starting at

$1950⁹⁹

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 up to 499 value with code ELEVATE (must add base to cart)

Beautyrest BR800 Greenwood 11.25" Firm Mattress

1528

Starting at

$1300⁹⁹

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest PressureSmart 2.0 Lux Firm Pillow Top 16.25" Mattress

1230

Starting at

$1600⁹⁹

$2250⁹⁹

$650 OFF

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to 499 value with code ELEVATE (must add base to cart)

Stearns & Foster Estate 13.5" Extra Firm Mattress

919

Starting at

$2999⁰⁰

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.

Beautyrest Black Series One 13.5" Extra Firm Mattress

552

Starting at

$1999⁰⁰

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.

Sleepy's By Sealy Hybrid HD Firm Mattress

372

Starting at

$850⁹⁹

$1700⁹⁹

$850 OFF

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest Black Series Two 14.25" Firm Mattress

304

Starting at

$2999⁰⁰

Firm Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Three 14.25" Extra Firm Mattress

238

Starting at

$3799⁰⁰

Firm Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series One 14.25" Firm Pillow Top Mattress

232

Starting at

$2249⁰⁰

Firm Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Four 17.5" Firm Summit Pillow Top Mattress

192

Starting at

$4649⁰⁰

Firm Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Hybrid KX-Class 15" Firm Mattress

171

Starting at

$4299⁰⁰

Firm Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Beauty Sleep® Midnight Dream II 12.5" Firm Mattress

133

Starting at

$1450⁹⁹

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beauty Sleep® Midnight Dream 12.5" Firm Mattress

121

Starting at

$690⁹⁹

$1450⁹⁹

$760 OFF

Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Firm Expandable Mattresses

Choosing a firm expandable mattress is more than just a practical bedding decision—it’s an investment in comfort, versatility, and long-term support that adapts to the changing needs of your household. Firm expandable mattresses are designed to offer a resilient, supportive sleep surface while providing the flexibility to fit various living situations. Whether you’re outfitting a guest room, a child’s room that will grow with them, or a multipurpose space that doubles as a home office or den, these mattresses are a trusted solution. Their ability to expand or contract—often accommodating trundle beds, daybeds, or adjustable frames—makes them a favorite for those who value both function and comfort. During the busy summer months, when guests arrive for extended stays or children return home from college, having a firm expandable mattress on hand means you’re always prepared to offer a restful night’s sleep. The firm support is especially appreciated by back and stomach sleepers, as well as those who prefer a mattress that resists sagging and maintains its shape over time.

When considering a firm expandable mattress, think about the unique needs of your space and the people who will use it. These mattresses are a thoughtful gift for recent graduates starting out in a new apartment, young families who host sleepovers, or anyone transitioning to a new living arrangement. Their compact form makes them easy to move and set up, which is a real advantage during the summer moving season or when rearranging furniture to accommodate guests. For those living in urban apartments or smaller homes, the expandable feature maximizes floor space without sacrificing sleep quality. Imagine a sunlit guest room that transforms from a cozy reading nook by day to a welcoming retreat for visitors at night, or a child’s bedroom that evolves with them, from playtime to sleepovers to study sessions. The firm feel ensures consistent support, promoting spinal alignment and reducing the likelihood of waking up with aches or stiffness—a benefit that resonates with anyone who values restorative sleep. If you’re looking for additional features tailored to warmer climates or sleepers who tend to overheat, you may also want to explore our selection of Firm Breathable Mattresses, which combine sturdy support with enhanced airflow for a cooler night’s sleep.

Firm expandable mattresses are built for durability, making them a reliable choice for high-traffic areas or homes that frequently welcome guests. They’re easy to care for and often compatible with a range of bedding accessories, from protective covers to plush toppers, allowing you to customize the feel to suit personal preferences. For families, these mattresses can become a staple—part of the memories made during summer sleepovers, holiday gatherings, or weekend visits from relatives. For individuals, they offer the peace of mind that comes with knowing your sleep environment will remain supportive and comfortable, even as your needs change over time. Whether you’re furnishing a new home, updating a guest space, or seeking a practical gift for someone embarking on a new chapter, a firm expandable mattress delivers both adaptability and comfort, ensuring that every night’s sleep is as restful as the last.