Best King Black Mattresses of 2026

The best king black mattresses combine spacious comfort with a bold, modern look for your bedroom. This guide ranks top-rated options based on user review ratings, helping you compare mattresses by comfort, support, materials and value. Whether you prefer a plush, medium or firm feel, you can find a king mattress that suits your sleep style and complements your space.

What to look for in the best king black mattresses

When choosing a king black mattress, consider comfort, support and how its design fits your bedroom.

1. Mattress Comfort

Choose a comfort feel that matches your sleep preferences, from plush cushioning to a firmer, more supportive surface. Memory foam, hybrid and innerspring mattresses can each offer a different feel and level of pressure relief.

2. Support And Spinal Alignment

A king mattress should provide consistent support across its surface to help promote proper spinal alignment. Consider your preferred sleep position, body type and whether you share the bed when comparing support levels.

3. Black Design And Style

A black mattress or black mattress cover can add a sleek, modern look to your bedroom. Check the product details to confirm whether the black finish is part of the mattress design or comes from a removable cover or matching bedding.

4. Size And Compatibility

King mattresses offer plenty of space for couples, but they require a compatible king bed frame and foundation. Measure your room and check the mattress dimensions, height and foundation requirements before making your selection.

Beautyrest Black Series Two 16.5" Medium Pillow Top Mattress

A luxurious black pillow top mattress with advanced support, cooling upgrades, and pressure relief.

293

Medium Comfort, best for

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

Starting at

$3699⁰⁰

$4099⁰⁰

$400 OFF

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Three 15" Firm Mattress

A firm, black memory foam mattress with advanced support, motion separation, and enhanced cooling technology.

2224

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Starting at

$4199⁰⁰

$4799⁰⁰

$600 OFF

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Four 17.5" Medium Summit Pillow Top Mattress

A luxurious black king-size mattress with a medium summit pillow top, breathable design, and pressure relief.

605

Medium Comfort, best for

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

Starting at

$5899⁰⁰

$6599⁰⁰

$700 OFF

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Two 15.5" Medium Mattress

A breathable, pressure-relieving king-size mattress in black with memory foam material and medium comfort level.

513

Medium Comfort, best for

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

Starting at

$3499⁰⁰

$3899⁰⁰

$400 OFF

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Four 17.25" Plush Summit Pillow Top Mattress

A plush black king-sized mattress with advanced sleep technology for pressure relief and adjustable base compatibility.

305

Plush Comfort, best for

Side Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

Starting at

$5899⁰⁰

$6599⁰⁰

$700 OFF

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series One 13.5" Extra Firm Mattress

A breathable, extra firm king-sized mattress with advanced support and temperature management technology.

697

Extra Firm Comfort, best for

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

Starting at

$2499⁰⁰

$2899⁰⁰

$400 OFF

$300 ⁶ adjustable base instant gift with purchase.

Beauty Sleep® Midnight Dream II 14.25" Ultra Plush Pillow Top Mattress

An ultra plush black mattress with memory foam and innerspring support for cooler, comfortable sleep.

664

Ultra Plush Comfort, best for

Side Sleepers
Toss and Turn
Bed Partner
Temperature
Pain

Starting at

$779⁹⁹

$1499⁹⁹

$720 OFF

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beauty Sleep® Midnight Dream 14.25" Medium Pillow Top Mattress

A black king-size mattress with memory foam and innerspring support for cooler, comfortable sleep.

378

Medium Comfort, best for

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

Starting at

$779⁹⁹

$1499⁹⁹

$720 OFF

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Black Series One 14.75" Medium Pillow Top Mattress

A luxurious medium pillow top mattress in black, offering advanced support, motion separation, and temperature management.

332

Medium Comfort, best for

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

Starting at

$3099⁰⁰

$3499⁰⁰

$400 OFF

$300 ⁶ adjustable base instant gift with purchase.

Beauty Sleep® Midnight Dream 12.25" Medium Euro Top Mattress

A plush black king mattress with medium comfort, featuring innerspring support and airflow-enhancing foams.

287

Medium Comfort, best for

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

Starting at

$669⁹⁹

$1399⁹⁹

$730 OFF

FREE ADJUSTABLE BASE ³ with code ELEVATE

What is a black mattress? + -

A black mattress features a dark-colored cover or upholstery that gives it a modern, streamlined look. Its exterior color does not determine the mattress materials or comfort feel.

What materials are used in black mattresses? + -

Black mattresses may include materials such as memory foam, innersprings, latex or a combination of these. Check each mattress description for details about its construction and cover.

Do black mattresses come in different comfort feels? + -

Yes. Black mattresses are available in a range of comfort feels, including plush, medium and firm, so you can choose an option that suits your preferences.

How do you clean a black mattress? + -

Keep a black mattress clean by using a compatible mattress protector, vacuuming the surface with an upholstery attachment and following the manufacturer's care instructions. Avoid saturating the mattress with liquid.

How can you style a black mattress? + -

Pair a black mattress with neutral bedding for a minimalist look or add lighter sheets, textured layers and colorful accents for contrast. A coordinated headboard and bedroom decor can complete the look.