Best Split King Mattresses (2024)

Written by Julia Forbes, Sleep Advisor Mattress Tester

Our Testing Process

Here at Sleep Advisor, our Sleep Certified experts use a refined mattress and product testing process to give you unbiased product suggestions… Read our full product review process.

If you’re going to share a King-size mattress, you may as well ensure that your side feels just the way you like it. This kind of customizability is possible with a Split King — traditionally, two Twin XL mattresses positioned side by side. Because the sides of the bed are distinct, you’re free to have a softer or firmer sleep space than your partner’s. If you have an adjustable bed frame, you’ll also be able to move your side into new positions independently.

What makes a great Split King mattress? Awesome edge support, a few different firmness options to choose from, and that crucial balance of softness and spine-aligning features. Informed by our testing, I’ve gathered the best Split King beds around for this list.

Our Top Pick for The Best Split King Mattress

The Saatva Classic is our top pick for the best Split King bed due to its unmatched edge support, customizable firmness options, and pressure relief.

Best Split King Mattresses

Saatva Classic – Editor’s Pick
Nectar – Best Affordable Split King Mattress
Helix Midnight Luxe – Best Split King Mattress for Side Sleepers
DreamCloud – Best Luxury Split King Mattress
Nolah Evolution – Best Soft Split King Mattress
Bear Elite Hybrid – Best Split King Mattress for Back Pain
Brooklyn Bedding Aurora Luxe – Best Cooling Split King Mattress
Titan Plus – Best Split King Mattress for Heavier Sleepers

Watch Our Video Review of the Best Split King Mattresses


	Saatva Mattress	Nectar Mattress	Helix Midnight Mattress	DreamCloud Original Mattress	Nolah Evolution Hybrid Mattress	Bear Elite Hybrid Mattress	Brooklyn Bedding Aurora Luxe Mattress	Titan Plus
Rating	4.2	4.3	4.1	4.5	4.8	4.3	4.2	4.3
Firmness	Multiple firmness options	Firm: 7.5/10	Medium-firm: 6/10	Medium-firm: 6.5/10	Multiple firmness options	Medium-firm: 6/10	Multiple firmness options	Firm: 8/10
Material	Innerspring	Foam	Hybrid	Hybrid	Hybrid	Hybrid	Hybrid	Hybrid
Cooling		—	—		—			—
Warranty	Lifetime warranty	Lifetime warranty	10-year warranty	Lifetime warranty	Lifetime warranty	Lifetime Warranty	10-year warranty	10-year warranty
Shipping	Free white glove delivery	Free shipping	Free shipping	Free shipping	Free shipping	Free shipping	Free shipping	Free shipping
Trial Period	365 nights	365 nights	100 nights	365 nights	120 nights	120 nights	120 nights	120 nights
Best For	Back Sleepers, Stomach Sleepers, Back Pain, Hot Sleepers, Seniors	Back Sleepers, Back Pain, Stomach Sleepers, Side Sleepers, Couples	Couples, Back Sleepers, Side Sleepers	Back Sleepers, Hot Sleepers, Seniors	Side Sleepers, Back Sleepers, Hip Pain, Seniors	Back Sleepers, Stomach Sleepers, Hot Sleepers, Hip Pain, Seniors	Hot Sleepers, Back Pain, Side Sleepers	Back Sleepers, Stomach Sleepers, Back Pain, Hip Pain, Seniors

Sleep Advisor’s Testing Methodology

At Sleep Advisor, our mattress reviews are based on findings from in-person tests that allow us to have a genuine understanding of how the mattress feels and performs. Our team of testers hosts a variety of body types and sleeping preferences, so we’re able to get a truly comprehensive understanding of how a mattress performs. We test in every sleeping position and for a swath of performance categories.

For this roundup, we focused on the best mattresses for those looking for a Split King bed. We took several factors into account when devising our list, including different sleeping positions, cooling elements, pressure relief, motion isolation, and edge support.

We’ll dive into it more below, but read our full testing methodology here.

Methodology Image- Sleep Advisor — I love testing mattresses in the Sleep Advisor testing facility.

What We Want to See in a Split King Mattress

Features Good for Couples

Split Kings are usually marketed toward couples who can’t seem to compromise on a bed. So, it’s important that these Split King mattresses have other features that should benefit co-sleepers. We looked at things like motion isolation, responsiveness, and cooling to judge whether or not this bed is a good fit for folks who share the bed.

Multiple Firmness Options

Since most shoppers considering a Split King are looking to satisfy differing needs, we tried to find options for you. Some of the mattresses on this list offer multiple firmness models. If you need a soft bed but your partner needs a firm, buying two Twin XL mattresses in the appropriate feels can result in a well-tailored Split King bed.

Solid Edges

Since a Split King is essentially two beds put together, edge support can be useful to avoid creating a noticeable divot or gap in the center of the mattress. We tried to pick beds with edges that won’t egregiously sag to avoid this issue.

The Best Split King Mattresses

Saatva Classic – Editor’s Pick

Editor’s Pick

Saatva Mattress

Coil-on-coil structure gives this elevated innerspring bed a luxurious feel and versatility.

Score 4.2/5

Read Saatva Mattress Review

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Material

Innerspring

Trial Period

365 nights

Shipping Method

Free white glove delivery

Firmness

Multiple firmness options

Warranty

Lifetime warranty

Price Range

$$$$$

We recommend this mattress for the following sleeper types:

Hot Sleepers

If you often overheat while you sleep, this mattress should help you stay cool.

Seniors

This bed is perfect for senior sleepers.

Back Pain

This bed is perfect for anyone suffering from back pain.

Back Sleeping

Ideal for lightweight, average weight, and heavyweight back sleepers.

Stomach Sleeping

Ideal for lightweight and average weight stomach sleepers.

Financing Options

Financing options are available for this mattress.

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Average Customer Rating

4.8/5

Watch Our Video Review

Editor’s Pick