Cyber Monday Breathable King Size Mattresses Sale

Shop our Cyber Monday selection of breathable king size mattresses to find spacious options with comfort features suited to sleepers who prefer a cooler feel. Explore available cooling king mattress options in a range of materials and comfort levels to help you choose the right fit for your bedroom and sleep style.

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Sleepy's By Sealy Memory Foam Medium Mattress

3527

Starting at

$889⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest PressureSmart 2.0 Firm 11" Mattress

Starting at

$1099⁷⁷

$2199⁹⁹

$1100 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest PressureSmart 2.0 Plush 11.75" Mattress

6252

Starting at

$1149⁷⁷

$2299⁹⁹

$1150 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest PressureSmart 2.0 Plush Pillow Top 13.75" Mattress

2696

Starting at

$1199⁷⁷

$2399⁹⁹

$1200 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-Adapt 11" Medium Previous Generation Mattress

3665

Starting at

$2029⁷⁷

$2899⁰⁰

$869 OFF

Medium Comfort, best for

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

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2799

Starting at

$1499⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest PressureSmart 2.0 Hybrid Medium 13" Mattress

1758

Starting at

$1474⁷⁷

$2949⁹⁹

$1475 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 11.25" Firm Mattress

2248

Starting at

$1299⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Stearns & Foster Estate 14.5" Firm Mattress

1837

Starting at

$3099⁰⁰

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1878

Starting at

$1499⁹⁹

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

1825

Starting at

$1999⁹⁹

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

1756

Starting at

$1099⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple Original Mattress

59773

Starting at

$2199⁰⁰

Medium Comfort, best for

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

Beautyrest BR800 12" Plush Euro Top Mattress

748

Starting at

$1399⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 12" Plush Mattress

1153

Starting at

$1699⁹⁹

Plush Comfort, best for

Side Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Nectar Classic 12" Firm Memory Foam Mattress

234

Starting at

$899⁰⁰

$1399⁰⁰

$500 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Breathable king size mattresses pair room to stretch out with materials and construction that can help air move through the sleep surface. For shoppers exploring Cyber Monday breathable king size mattresses, that combination matters as much on a cool evening under a thick comforter as it does in a bedroom that tends to stay warm. A standard king mattress measures approximately 76 inches wide by 80 inches long, giving two adults generous space to settle into their preferred positions without crowding each other. The extra width can be especially welcome when one person sleeps curled up and the other stretches out, or when a child occasionally joins the bed after an unsettling dream. Breathability describes how readily air can pass through materials; it does not guarantee a particular sleeping temperature. Room temperature, humidity, bedding and individual comfort preferences all affect how warm a mattress feels overnight. Within a mattress, an airy cover, ventilated comfort layers and an open coil structure can each contribute to airflow, depending on the overall design. Hybrid mattresses combine foam or latex comfort layers with a coil support system, while all-foam mattresses rely on their foam composition and construction to balance cushioning with airflow. Innerspring designs typically have a coil-based support system with varying amounts of padding above it. None of these categories is automatically the coolest or most comfortable choice for every sleeper. A deeply cushioned surface may feel inviting to someone who likes a gentle embrace, while a more responsive surface may suit someone who changes positions frequently. King size mattresses are well suited to spacious primary bedrooms, shared sleeping arrangements and anyone who enjoys extra room to move. For a household updating its bedroom during the cooler months, breathable construction can complement cozy bedding without requiring every layer of the bed to feel heavy or dense. The most useful comparison brings together airflow, support, surface feel and the way the mattress will be used night after night.

The materials nearest the body influence both the initial feel and how easily warmth and moisture can move away from the sleep surface. Covers made with cotton or moisture-managing fibers may help create a less clammy feel, though the complete fabric blend and construction matter more than a single ingredient. Quilting also changes the experience: a thick, cushioned top feels distinct from a smoother stretch cover that allows closer contact with the comfort layers beneath it. Open-cell or perforated foams are designed to create pathways for air, while latex often provides a buoyant feel and may include ventilation holes. Memory foam generally contours more closely around the body, which can be helpful for cushioning shoulders and hips, but its temperature performance varies by formulation, thickness and surrounding materials. Gel infusions and cool-to-the-touch fabrics are features worth understanding rather than treating as promises of all-night cooling. A surface that feels cool when first touched may not maintain that sensation throughout the night. Coils leave space within the support core for air movement, although dense layers above them can influence how much that openness affects the sleeper. Comfort remains equally important. Side sleepers often appreciate enough cushioning to let shoulders and hips settle without feeling pressed against the surface. Back sleepers may prefer a balance of contouring and steady support, while stomach sleepers often need a firmer feel that helps limit excessive sinking around the midsection. Body size and personal preference can change those needs, so firmness labels are best treated as broad descriptions rather than universal measures. For couples, motion isolation can help soften the ripple of a partner turning over, and responsive materials can make repositioning easier. Edge support also deserves attention on a king mattress, particularly for someone who sits along the side to put on socks or sleeps close to the perimeter. A breathable mattress feels most useful when its temperature-related features work alongside comfortable pressure relief, dependable support and enough stability for everyday movement.

A king mattress also needs to fit the room and the rest of the bed comfortably. Its 76-inch width can transform a shared sleep space, but a bedroom still needs clear walking paths, access to drawers and enough room to change the sheets without squeezing between furniture. Measuring the frame as well as the mattress footprint helps account for a wide headboard, upholstered sides or a footboard that extends into the room. Doorways, stair turns and ceiling clearance can affect delivery and setup, especially in older homes with narrow halls. Standard king and California King mattresses are not interchangeable: a California King typically measures 72 inches wide by 84 inches long, trading some width for added length. If a guest bedroom or smaller primary bedroom needs a more compact footprint, Cyber Monday breathable full size mattresses offer another size to consider; a standard full measures approximately 54 inches wide by 75 inches long. For any size, the foundation must meet the mattress manufacturer’s support requirements, including appropriate slat spacing and center support where specified. Compatibility with an adjustable base should also be confirmed rather than assumed. Everyday care helps preserve the mattress and its intended feel. A breathable mattress protector can help guard against spills and perspiration, while washable sheets and lighter, layered bedding make it easier to adjust comfort as household heating and bedroom temperatures change. A thick waterproof barrier or heavily padded topper may alter airflow and cushioning, so accessories deserve the same attention as the mattress itself. Follow the care label for cleaning, avoid soaking the surface and allow any cleaned area to dry fully before replacing bedding. Rotate the mattress only as recommended, and do not flip a one-sided design. Durability depends on material quality, construction, support and use rather than height alone. For a shared bedroom upgrade or a thoughtfully coordinated household gift, confirming the sleepers’ preferred feel and room dimensions helps ensure that generous king size space translates into lasting, practical comfort.

What makes a mattress breathable? + -

Breathable mattresses may feature ventilated foam, innerspring coils, breathable comfort layers and moisture-managing fabrics that support airflow through the mattress.

Which mattress materials are commonly used in breathable designs? + -

Common materials include individually wrapped coils, latex, open-cell foam, gel-infused foam and breathable knit or woven mattress covers.

Are breathable mattresses available in different firmness levels? + -

Yes. Breathable mattresses are available in a range of firmness levels, from plush to firm, with hybrid, innerspring, foam and latex constructions.

How should a breathable mattress be cared for? + -

Follow the care instructions provided with the mattress, use a compatible foundation and rotate the mattress only if the manufacturer recommends it.

What should I look for during a Cyber Monday mattress event? + -

Compare mattress construction, comfort materials, firmness options, trial terms and included services to find an option that matches your sleep preferences.