What does split California King mean?

It is two separate California King halves placed side by side. Each half can move independently on an adjustable base, and each fits its own frame section.

Is this mattress good for side sleepers?

It is firm, so many side sleepers find it too hard on the shoulders and hips. Side sleepers usually do better on a softer or hybrid model.

Does it need a box spring?

No. A firm, flat foundation or an adjustable base works; a box spring is optional and not required for the foam.

The gel foam helps somewhat, but it is still an all-foam mattress and some owners report it sleeps warm. A cooling cover or a cooler room helps.

Can the two halves be used on separate bases?

Yes. The split design lets each half sit on its own adjustable base, so partners can set different positions.

How does it compare with a hybrid mattress?

It isolates motion better and is quieter, but hybrids generally offer more airflow and firmer edges.

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This hour's deals

Simmons Brittany Luxury Firm Split California King Mattress

−65%

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Split king luxury firm mattress for the couple who can't agree

Name: Simmons Brittany Luxury Firm Split California King Mattress
Brand: Simmons
Availability: InStock

Simmons Brittany Luxury Firm Split California King Mattress

The Simmons Brittany luxury firm split California king lets each side move independently, so late-night tossing stays on your side.

Deal score 9.7 · Unreal

$599.99$1,700.00 Mattress Nation's regular price

You save $1,100.01 at Mattress Nation

Deal.ai's agents found this deal on November 11. The store may have changed its price since.

Why it's a great deal

Mattress Nation lists its regular price at $1,700.00: 65% off by its own figures

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Price facts

This deal was $599.99 at Mattress Nation on Nov 11.

Every store we checked

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In stock
$599.99Checked 1 h ago
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Specs

Size: California King
Type: Gel Memory Foam

About the Simmons Brittany Luxury Firm Split California King Mattress

The Simmons Brittany Luxury Firm is a gel memory foam mattress sold in a split California King, meaning two independent halves that each fit an adjustable base. The firm feel and foam construction suit back and stomach sleepers who want a flat, supportive surface with little bounce. It is a niche pick: split sizes cost more than a single mattress and the foam runs warm for some sleepers. Shoppers comparing it with hybrid and innerspring rivals should weigh its motion isolation against their extra airflow and edge support.

Best forCouples who want separate adjustable-base positionsBack and stomach sleepers who prefer a firm feelPeople who want strong motion isolationGuest or primary bedrooms with an adjustable frame

Pros

Two independent halves move separately on an adjustable base
Gel memory foam adds cooling versus plain foam
Firm surface keeps the spine aligned for back and stomach sleepers
Foam absorbs motion well, so a partner's movement stays local
No springs means no squeaks or coil noise

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