Firm King Mattresses With Micro Coils

Firm King Mattresses With Micro Coils offer a supportive sleep experience designed for those who prefer a sturdy feel and ample space to stretch out. Combining advanced micro coil technology with a king-size profile, these mattresses are crafted for lasting comfort and stability. Explore a range of options that balance robust support with responsive comfort, helping you wake up refreshed and ready to take on the day. Discover the difference that Firm King Mattresses With Micro Coils can make in your bedroom retreat.

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Beautyrest BR800 11.25" Firm Mattress

2057

Starting at

$1300⁹⁹

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)

Beautyrest Black Series Three 15" Firm Mattress

1688

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.

Sleepy's By Sealy Spring Medium Mattress

1276

Starting at

$1000⁹⁹

$1600⁹⁹

$600 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain;Bed Partner;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)

Sleepy's By Sealy Spring Firm Mattress

934

Starting at

$1850⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain;Bed Partner;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 Black Series Two 14.25" Firm Mattress

302

Starting at

$3599⁰⁰

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

237

Starting at

$4499⁰⁰

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 16.5" Firm Pillow Top Mattress

226

Starting at

$4899⁰⁰

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

$5199⁰⁰

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.

Beautyrest Black Hybrid Series Three 15" Medium Mattress

106

Starting at

$4899⁰⁰

Medium Comfort,

Pain;Bed Partner;Temperature;Toss and Turn
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Sealy Posturepedic Ashurst II 13" Firm Mattress

Starting at

$1699⁰⁰

Firm Comfort, best for

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

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

Beautyrest Black Hybrid Series Four 16" Plush Apex Top Mattress

Starting at

$6199⁰⁰

Plush Comfort,

Pain;Bed Partner;Temperature;Toss and Turn
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Hybrid Series Four 16" Firm Apex Top Mattress

Starting at

$6199⁰⁰

Firm Comfort,

Pain;Bed Partner;Temperature;Toss and Turn
Bed Partner
Temperature

$300 ⁶ adjustable base instant gift with purchase.

Sealy Posturepedic Plus Norman II 13" Ultra Firm Mattress

Starting at

$1899⁰⁰

Extra Firm Comfort, best for

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

Receive $200 Instant Gift⁴ with purchase.

Beautyrest Greenwood 10.5" Firm Mattress

3331

Starting at

$520⁹⁹

$1300⁹⁹

$780 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 Silver BRS900 11.75" Extra Firm Mattress

3046

Starting at

$1700⁹⁹

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

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1637

Starting at

$2000⁹⁹

Extra Firm Comfort, best for

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

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

Tulo 8" Firm Cooling Hybrid Mattress

Starting at

$900⁹⁹

Firm Comfort, best for

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

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

Sealy Posturepedic Plus Hybrid High Point 14" Firm Mattress

4246

Starting at

$1450⁷⁷

$2899⁰⁰

$1449 OFF

Firm Comfort, best for

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

Purple RestorePlus 13" Firm Hybrid Mattress

1659

Starting at

$3999⁰⁰

Firm Comfort, best for

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

Beautyrest BR800 Greenwood 10.5" Firm Mattress

3362

Starting at

$559⁹⁹

$1300⁹⁹

$741 OFF

Firm Comfort, best for

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

Beautyrest PressureSmart 2.0 Extra Firm 13.5" Mattress

2017

Starting at

$2900⁹⁹

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

1524

Starting at

$615⁹⁹

$1300⁹⁹

$685 OFF

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)

Sleepy's By Sealy Spring Plush Euro Top Mattress

446

Starting at

$2750⁹⁹

Plush Comfort, best for

Side Sleepers
Pain;Bed Partner;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)

Sealy Posturepedic Elite Brenham II 16" Medium Euro Top Mattress

309

Starting at

$2699⁰⁰

Medium Comfort, best for

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

Receive $200 Instant Gift⁴ with purchase.

Sealy Posturepedic Elite Brenham II 15" Medium Mattress

240

Starting at

$2499⁰⁰

Medium Comfort, best for

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

Receive $200 Instant Gift⁴ with purchase.

Beautyrest Black Series One 14.25" Firm Pillow Top Mattress

232

Starting at

$3299⁰⁰

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.

Firm King Mattresses With Micro Coils

When you’re searching for a sleep surface that delivers both robust support and subtle responsiveness, firm king mattresses with micro coils offer an exceptional solution for couples, families, and anyone who values a spacious, supportive bed. The king size is ideal for those who crave extra room to stretch out—whether you share your bed with a partner, kids who occasionally climb in during the night, or even a loyal pet. The firm feel of these mattresses is particularly well-suited for back and stomach sleepers, or for those who simply prefer a sturdy, less yielding sensation beneath them. Micro coils, which are smaller and more numerous than traditional innersprings, provide targeted support and help to distribute weight evenly across the mattress. This design helps minimize motion transfer, so you can enjoy an undisturbed rest even if your partner tosses and turns. During the warm nights of August, the breathability of micro coil systems can be especially appreciated, as the open structure encourages airflow and helps regulate temperature, giving you a cooler, more comfortable sleep through the lingering heat of summer.

Firm king mattresses with micro coils aren’t just about support—they’re about creating a balanced foundation that promotes healthy spinal alignment and eases pressure points, especially for those who experience back or joint discomfort. These mattresses can be an excellent gift for newlyweds setting up a home, parents upgrading the family bedroom, or anyone celebrating a milestone birthday or anniversary. The king size is a thoughtful choice for people who love the feeling of luxury and space, transforming an ordinary bedroom into a personal retreat. The micro coil layer adds a gentle, adaptive touch to the firm base, making the mattress versatile enough to accommodate a range of sleep preferences. For those who have struggled with mattresses that are either too soft or too rigid, the combination of firm support and micro coil adaptability can be a welcome relief. If you’re interested in exploring other supportive sleep solutions, you might also want to consider our Firm High Density Coil Mattresses, which offer a similarly robust feel with a different coil structure.

Choosing a firm king mattress with micro coils is an investment in nightly comfort and long-term well-being. The durability of these mattresses means they can stand up to years of nightly use, maintaining their shape and support through countless seasons. As summer gives way to fall, you’ll notice how the mattress adapts to changing needs—providing cool comfort on hot nights and consistent support as the weather cools. Whether you’re reading to your kids at bedtime, enjoying a lazy Sunday morning with coffee and a good book, or simply winding down after a busy day, the generous space and firm, responsive feel of a king mattress with micro coils create the perfect setting for rest and relaxation. With their thoughtful construction and commitment to comfort, these mattresses offer a blend of modern innovation and timeless reliability, making them a smart choice for anyone seeking a better night’s sleep.