King Size Mattresses

King Size Mattress – Maximum Space & Comfort 

The ultimate upgrade for couples and sprawlers alike. At 76" x 80", Keetsa's king mattresses deliver full-body pressure relief with deluxe-grade memory foam and iCoil® hybrid options built to accommodate two sleep styles at once. Free shipping, 90-night sleep trial, and our 12-year warranty.

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  • Keetsa Plus memory foam mattress on a walnut platform bed styled with neutral pillows, emphasizing a smooth quilted top, medium profile support, and a clean modern bedroom aesthetic designed for everyday comfort and relaxation. Detailed side view of Keetsa Plus mattress edge with stitched wave pattern and subtle K logo on a solid wood platform, emphasizing edge support, textured fabric, and quality craftsmanship for long-lasting performance.
    Firm Hybrid

    The Keetsa Plus®

    25% off

    The Keetsa Plus®

    A firm mattress topped with a one-inch layer of body-responsive Memory Foam and another inch of divinely soft Comfort Foam.

    $ 1,390.00 USD
    $ 1,390.00 USD
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    25% off
  • Keetsa Pillow Plus® medium-firm hybrid mattress, 11-inch profile with 3-inch memory foam pillow top and individually wrapped iCoil® springs, staged on natural wood platform bed in bright modern bedroom with city-view windows, globe lamps, and wood nightstands, highlighting quilted cover and edge support. Foot-of-bed close-up of Keetsa Pillow Plus mattress showing thick plush pillow top, wave-stitched side panel with embossed Keetsa logo, and natural light wood platform base on cream carpet.
    Medium Firm Hybrid

    The Keetsa Pillow Plus®

    25% off

    The Keetsa Pillow Plus®

    A medium firm mattress wrapped in a three-inch integrated layer of plush, body-responsive Memory Foam and Comfort Foam.

    $ 1,790.00 USD
    $ 1,790.00 USD
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    25% off
  • Keetsa Supreme mattress centered on low-profile platform bed in warm neutral bedroom with abstract wall art and wood shelving, front-facing view showing quilted top and structured side profile. Close-up corner of Keetsa Supreme mattress showing quilted channel-stitched cover, structured edge support, and embossed Keetsa logo on cream fabric panel resting on platform base.
    Soft Memory Foam

    The Keetsa Supreme

    25% off

    The Keetsa Supreme

    A sublimely soft, coil-free mattress featuring four inches of Memory Foam over a firm, supportive base.

    $ 2,390.00 USD
    $ 2,390.00 USD
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    25% off
  • Keetsa Cloud® firm memory foam mattress, 10-inch profile, front-facing view on a metal platform bed in a bright contemporary bedroom, highlighting low-profile design and supportive foam construction ideal for back sleepers. Detailed side view of Keetsa Cloud mattress with smooth fabric cover and subtle K logo on a metal frame, highlighting consistent edge support, refined construction, and a low-profile base suited for modern bedroom styling.
    Firm Memory Foam

    The Keetsa Cloud®

    25% off

    The Keetsa Cloud®

    A firm coil-free mattress featuring 2.5 inches of luxuriant Memory Foam.

    $ 1,590.00 USD
    $ 1,590.00 USD
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    25% off
  • Keetsa Classic mattress on a gray upholstered platform bed with warm accent lighting and modern wall paneling, highlighting a tufted quilted surface, balanced support, and a clean contemporary bedroom setup designed for comfortable sleep. Side profile of Keetsa Tea Leaf Classic mattress on a gray platform bed near a large window at sunset, showcasing layered foam construction, supportive height, and a sleek modern bedroom setting with soft ambient lighting.
    Firm Hybrid

    The Keetsa Classic

    25% off

    The Keetsa Classic

    A firm iCoil mattress topped with five inches of responsive and supportive Memory Foam and Comfort Foam.

    $ 2,690.00 USD
    $ 2,690.00 USD
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    25% off
  • Keetsa Dream mattress centered on upholstered platform bed, front-facing view in symmetrical traditional bedroom with coffered ceiling, paired fluted nightstands, and navy and terracotta accent pillows. Keetsa Dream mattress foot-of-bed angle showing diamond-quilted sleep surface, wave-stitched side panel with embossed Keetsa logo, and upholstered platform base on marble-patterned rug in neutral bedroom
    Soft Hybrid

    The Keetsa Dream®

    25% off

    The Keetsa Dream®

    Opulent comfort. Unrivalled pressure relief. Cool, edge-to-edge support for every sleep style and every kind of dreamer. Some dreams you wake up from. Some you never want to leave.  

    $ 3,790.00 USD
    $ 3,790.00 USD
    Shop now
    25% off

Rest Easy with Keetsa

Fast and free shipping

Free shipping to 48 states.

Generous return policy

Our goal is to make you happy to the best of our ability.

12-year warranty

All Keetsa mattresses include a 12 year warranty for material and workmanship.

Financing available

Financing as low as $42/month at 0% APR

Frequently Asked Questions

What are the dimensions of a King size Keetsa mattress?

A King size Keetsa mattress measures 76"W x 80"L. With king size bed dimensions giving each sleeper 38 inches of personal space — equivalent to a twin bed each — it's the ideal choice for couples who want the most generous room in a standard king size mattress.

What is the difference between a King and Cal King?

The King (76"W x 80"L) is wider but shorter than the Cal King (72"W x 84"L). A king size mattress is better for couples who want maximum side-to-side space. A california king mattress is four inches longer, making it a better fit for taller individuals. Use our king vs california king comparison guide to decide.

How long will the mattress take to expand after delivery?

Your mattress will begin expanding as soon as you unwrap it. While it's ready to sleep on right away, the full expansion to its proper size dimensions can take up to four weeks. Like all mattresses in a box, patience ensures the best comfort experience.

What is the return and warranty policy?

Every Keetsa mattress comes with our 12-year. You also have a 90-day mattress trial period — we ask that you sleep on your new mattress for at least 30 days before deciding on a return. A 10% fee applies for all returns and exchanges.

Does keetsa mattress require a box spring or bed frame?

No box spring is required. Keetsa mattresses can be placed directly on any of our Keetsa steel bed frames or any flat, supportive surface. If you prefer added height, our steel box spring "The Base" pairs perfectly with all Keetsa mattresses — available in every size from twin to california king.

Is a memory foam mattress good for my back?

Yes. Memory foam conforms to your body's contours, helping support your spine in a healthy, neutral alignment regardless of your sleep position. The The Keetsa Supreme® is especially well-suited for side sleepers — making it one of the best mattresses for side sleepers — as the soft foam reduces pressure on shoulders and hips. Back sleepers may also enjoy the supportive base beneath the foam layers.

0% APR Financing Available

No muss, no fuss financing so you can sleep at night.

Easy & Budget Friendly

Simply choose Affirm financing in the checkout.

You Have Options

Choose a payment method and plan that suits your budget.

Your rate will be 0% APR or 10–36% APR based on credit, and is subject to an eligibility check. For example, a $700 purchase might cost $63.18/mo over 12 months at 15% APR.
Payment options through Affirm are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required.