Is this mattress good for side sleepers?

It is a 9-inch pocket coil mattress with no thick comfort foam on top. Back and stomach sleepers usually do better on it; side sleepers often want a softer, deeper mattress.

Does it really reduce motion transfer?

Pocket coils are individually wrapped, so each spring reacts on its own. That design is what limits motion transfer, though a coil mattress still moves more than all-foam.

How long does it take to expand after unboxing?

Compressed mattresses normally take a day or more to reach full height, and the 9-inch profile may look thin at first. Give it time before judging the feel.

Does it need a box spring?

A pocket coil mattress works on a slatted bed frame, a platform base or a box spring. A solid, supportive base is what matters.

Is a 9-inch mattress thick enough for adults?

It is on the thin side for a hybrid. Average-weight adults are usually fine; heavier sleepers often prefer 10 to 12 inches for more support.

SeaYh 9 in. California King Pocket Coil Spring Mattress in a Box

Best price now

$628.69at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

SeaYh 9 in. California King Pocket Coil Spring Mattress in a Box

Best price now

$628.69at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Last seen at $628.69 at Walmart on Nov 9.

Our take on the SeaYh 9 in. California King Pocket Coil Spring Mattress in a Box

The SeaYh 9 in. California King is a mattress-in-a-box built on pocket coil springs with a white knit cover. The pocket coils are the main selling point: each spring moves on its own, which is how the brand claims low motion transfer and pressure relief. At 9 inches it is a thinner, firmer-feeling profile than the 12-inch hybrids it competes with, so it suits back and stomach sleepers and couples on a budget more than side sleepers who want deep cushioning. It ships compressed in a box and expands after unboxing.

Best forCouples who want less motion transferBack and stomach sleepersGuest rooms and second bedroomsShoppers who want a spring mattress without a big outlay

Pros

Pocket coil springs limit motion transfer between sleepers
9-inch profile keeps it lighter and easier to move than thick hybrids
Ships compressed in a box for tight stairways and doorways
White knit cover looks clean in a guest or main bedroom
Spring support suits back and stomach sleepers

Cons

No memory foam or pillow-top layer, so side sleepers may find it thin
9 inches is shallower than most hybrid mattresses
No edge support reinforcement mentioned
California King bedding costs more and is harder to find in stores

SeaYh 9 in. California King Pocket Coil Spring Mattress in a Box prices at every store

WalmartNew
In stockSold by Han-TechReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$628.69Free shippingChecked Nov 9
Visit Walmart

About the SeaYh 9 in. California King Pocket Coil Spring Mattress in a Box

California King mattress built with pocket coil springs.

The mattress uses pressure relief and low motion transfer technology.

Size: California King
Thickness: 9 in.
Construction: Pocket coil spring
Features: Pressure relief, low motion transfer
Packaging: Mattress in a box
Color: White

Specifications

color: WhiteSource

Questions and answers

Is this mattress good for side sleepers?: It is a 9-inch pocket coil mattress with no thick comfort foam on top. Back and stomach sleepers usually do better on it; side sleepers often want a softer, deeper mattress.
Does it really reduce motion transfer?: Pocket coils are individually wrapped, so each spring reacts on its own. That design is what limits motion transfer, though a coil mattress still moves more than all-foam.
How long does it take to expand after unboxing?: Compressed mattresses normally take a day or more to reach full height, and the 9-inch profile may look thin at first. Give it time before judging the feel.
Does it need a box spring?: A pocket coil mattress works on a slatted bed frame, a platform base or a box spring. A solid, supportive base is what matters.
Is a 9-inch mattress thick enough for adults?: It is on the thin side for a hybrid. Average-weight adults are usually fine; heavier sleepers often prefer 10 to 12 inches for more support.
Where is the SeaYh 9 in. California King Pocket Coil Spring Mattress in a Box cheapest?: At Walmart, for $628.69, as of our latest check.