Is the Siena 8-inch mattress good for side sleepers?

The gel memory foam cushions shoulders and hips, so many side sleepers find it comfortable. Heavier sleepers may want a thicker mattress for more support.

Does it need a box spring?

No. It works on a solid platform, slatted frame or adjustable base. A box spring is optional and not required.

Will the gel foam keep me cool?

The gel is meant to reduce heat buildup, but this is still an all-foam mattress. Hot sleepers may find it warmer than a hybrid with coils.

How long does it take to expand after unboxing?

It usually expands within a few hours and reaches full shape in about 24 to 48 hours. Sleeping on it sooner is fine.

Most owners describe a medium-firm feel with a cushioned top. It is not a plush pillow-top mattress.

Can it be used on a bunk bed or RV?

The 8-inch profile fits many bunks and RV platforms. Check your frame's weight limit and support surface first.

Where is the Siena 8” Cal King Gel Memory Foam Mattress cheapest?

At Walmart, for $349.00, as of our latest check.

What do buyers say about the Siena 8” Cal King Gel Memory Foam Mattress?

Rated 4.5 out of 5 from 192 ratings.

Siena 8” Cal King Gel Memory Foam Mattress

Best price now

$349.00at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Siena 8” Cal King Gel Memory Foam Mattress

Best price now

$349.00at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $349.00 at Walmart on Nov 9.

Our take on the Siena 8” Cal King Gel Memory Foam Mattress

The Siena 8-inch Gel Memory Foam Mattress is a budget-minded all-foam bed in California King, built with gel-infused memory foam over a support base. The gel layer is meant to pull heat away and cushion pressure points, while the 8-inch profile keeps it low and easy to move. It suits guest rooms, kids' rooms, rentals and shoppers who want a simple foam bed without paying for hybrid coils or thick luxury layers. Against thicker memory foam rivals it offers less sink and less edge support, and owners generally rate it comfortable for the money.

Best forGuest and spare bedroomsKids' rooms and first apartmentsRentals and furnished unitsShoppers wanting a low-profile all-foam bed

Pros

Gel-infused memory foam cushions pressure points
Low 8-inch profile suits platform beds and bunks
All-foam build needs no box spring on a solid base
Simple setup: unbox and let it expand
California King size gives generous room for couples

Cons

Thin 8-inch build gives limited deep support for heavy sleepers
All-foam design has weaker edge support than hybrids
Memory foam can sleep warm for hot sleepers
Less durable long-term than thicker or coil mattresses

Siena 8” Cal King Gel Memory Foam Mattress prices at every store

WalmartNew
In stockSold by ResidentReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$349.00Free shippingChecked Nov 9
Visit Walmart

What reviewers say

4.5 / 5192 ratings

Owners rate the Siena around 4.5 out of 5, calling it comfortable and good value for a foam mattress. Many mention easy setup and a firm-but-cushioned feel. Some note it sleeps warm and softens at the edges.

What people mention

ComfortPraisedOwners describe it as comfortable and supportive for the price.
ValuePraisedBuyers say it delivers a good night's sleep without spending much.
SetupPraisedReviewers find unboxing and expansion straightforward.
TemperatureCriticisedSome sleepers say the foam traps heat and feels warm.
Edge supportCriticisedOwners note the sides compress easily when sitting or lying near the edge.
DurabilityMixedA few report the foam softening sooner than expected.

About the Siena 8” Cal King Gel Memory Foam Mattress

It is designed to support the body so you can fall asleep fast and wake up feeling refreshed.

Size: California King
Material: Memory foam
Thickness: 8 in
Color: White

Specifications

bed_size: California KingSource
material: Memory FoamSource
mattress_thickness: 8 inSource
color: WhiteSource

Questions and answers

Is the Siena 8-inch mattress good for side sleepers?: The gel memory foam cushions shoulders and hips, so many side sleepers find it comfortable. Heavier sleepers may want a thicker mattress for more support.
Does it need a box spring?: No. It works on a solid platform, slatted frame or adjustable base. A box spring is optional and not required.
Will the gel foam keep me cool?: The gel is meant to reduce heat buildup, but this is still an all-foam mattress. Hot sleepers may find it warmer than a hybrid with coils.
How long does it take to expand after unboxing?: It usually expands within a few hours and reaches full shape in about 24 to 48 hours. Sleeping on it sooner is fine.
Is it firm or soft?: Most owners describe a medium-firm feel with a cushioned top. It is not a plush pillow-top mattress.
Can it be used on a bunk bed or RV?: The 8-inch profile fits many bunks and RV platforms. Check your frame's weight limit and support surface first.
Where is the Siena 8” Cal King Gel Memory Foam Mattress cheapest?: At Walmart, for $349.00, as of our latest check.
What do buyers say about the Siena 8” Cal King Gel Memory Foam Mattress?: Rated 4.5 out of 5 from 192 ratings.