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

$1350⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Temperature
Bed Partner

Sleepy's Basic Innerspring Firm Mattress

7995

Starting at

$250⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Sleepy's Rest Firm 2.0 Innerspring Mattress

6375

Starting at

$350⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Serta iSeries 2.0 Hybrid 2000 12.5" Firm Mattress

1633

Starting at

$2400⁹⁹

$3000⁹⁹

$600 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Temperature
Bed Partner
Pain

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

Beautyrest BR800 11.25" Firm Mattress

1632

Starting at

$615⁹⁹

$1300⁹⁹

$685 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn
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

144

Starting at

$1200⁹⁹

$1900⁹⁹

$700 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
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

204

Starting at

$200⁹⁹

$350⁹⁹

$150 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn
Pain
Temperature

Sealy Essentials Spruce 5.5" Firm Mattress

1029

Starting at

$650⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Beautyrest Black Series Three 15" Firm Mattress

1295

Starting at

$3899⁰⁰

$4299⁰⁰

$400 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Tempur-Pedic TEMPUR-LuxeAdapt 13" Firm Mattress

987

Starting at

$4999⁰⁰

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

Receive $300 Instant Gift⁴ with purchase.

Beautyrest PressureSmart 2.0 Hybrid Firm 13" Mattress

948

Starting at

$1300⁹⁹

$2250⁹⁹

$950 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Temperature
Bed Partner

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

Purple RestorePlus 13" Firm Hybrid Mattress

Starting at

$2549⁰⁰

$2849⁰⁰

$300 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

Tempur-Pedic TEMPUR-ProAdapt 1.0 12" Firm Mattress

5171

Starting at

$2869³⁰

$4099⁰⁰

$1230 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Temperature
Pain
Allergies

Beautyrest PressureSmart 2.0 Extra Firm 13.5" Mattress

1498

Starting at

$1150⁹⁹

$1650⁹⁹

$500 OFF

Extra Firm Comfort, best for

Back;Stomach Sleepers
Pain
Temperature
Bed Partner

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

Tempur-Pedic TEMPUR-LuxeAdapt 1.0 13" Firm Mattress

1262

Starting at

$3429³⁰

$4899⁰⁰

$1470 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Temperature
Pain
Bed Partner

Beautyrest PressureSmart 2.0 Lux Firm Pillow Top 16.25" Mattress

977

Starting at

$2250⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain
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

625

Starting at

$2799⁰⁰

$2999⁰⁰

$200 OFF

Extra Firm Comfort, best for

Back;Stomach Sleepers
Bed Partner
Pain
Temperature

Receive $300 Instant Gift⁴ with purchase.

Beautyrest Black Series One 13.5" Extra Firm Mattress

388

Starting at

$1799⁰⁰

$1999⁰⁰

$200 OFF

Extra Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Two 14.25" Firm Mattress

223

Starting at

$2599⁰⁰

$2799⁰⁰

$200 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Four 17.5" Firm Summit Pillow Top Mattress

149

Starting at

$4599⁰⁰

$4999⁰⁰

$400 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Sleepy's By Sealy Hybrid HD Firm Mattress

Starting at

$850⁹⁹

$1700⁹⁹

$850 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Toss and Turn
Temperature

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

Beauty Sleep® Midnight Dream 11.5" Firm Mattress

Starting at

$400⁹⁹

$1000⁹⁹

$600 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn
Bed Partner
Pain

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

Pressuresmart MF Firm 15" Euro Top Mattress

Starting at

$2500⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
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

Starting at

$470⁹⁹

$1170⁹⁹

$700 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn
Bed Partner
Temperature

Beautyrest Black Hybrid Series One 12.5" Firm Mattress

Starting at

$2399⁰⁰

$2599⁰⁰

$200 OFF

Firm Comfort,

Pain
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Hybrid Series Four 16" Firm Apex Top Mattress

Starting at

$3949⁰⁰

$4349⁰⁰

$400 OFF

Firm Comfort,

Pain
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

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.