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Deal.ai › Serta › Mattresses
Serta
Serta Classic Blissville Firm Mattress 12.5" King

Serta Classic Blissville Firm Mattress 12.5" King

Best price now

$619.99at Mattress FirmObserved at 6:26 AM

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Our take on the Serta Classic Blissville Firm Mattress 12.5" King

The Serta Classic Blissville is a 12.5-inch firm foam mattress sold in a king size, with three support zones built into the foam. It sits at the entry level of Serta's line, aimed at back and stomach sleepers who want an even, unyielding surface. At $619.99 at Mattress Firm as of November 8, 2026, it is the only new price listed, so there is no recent range to compare it against.

Best forBack and stomach sleepers who want a firm surfaceShoppers replacing an old innerspring on a budgetCouples who dislike sink-in memory foam feelGuest rooms and spare bedrooms
Pros
  • Firm, flat support with little sink-in
  • 12.5-inch profile fits standard king sheets and frames
  • Three zones add firmer support under the middle
  • Foam construction limits motion transfer between sleepers
  • King size at a low price for the size
Cons
  • Firm feel is too hard for many side sleepers
  • All-foam build can sleep warm
  • No edge reinforcement listed, so edges may soften
  • Thin comfort layer may break down sooner than premium foam
  • No trial or return terms are stated with the price

Serta Classic Blissville Firm Mattress 12.5" King prices at every store

  • Mattress FirmNew

    In stock

    $619.99Free shippingObserved at 6:26 AM
    Visit Mattress Firm

Store links may earn us a commission. Price via Klarna.

Serta Classic Blissville Firm Mattress 12.5" King price history

Lowest price we've seen: $619.99 on Nov 8 at Mattress Firm. Tracked across 1 store since Nov 8.

Specifications

Bed Size
KingSource
Comfort Level
FirmSource
Filling
FoamSource
Thickness Mattress (")
12.5Source
Zones
3 zonesSource

Questions and answers

Is the Serta Classic Blissville good for side sleepers?
Most side sleepers will find a 12.5-inch firm all-foam bed too hard at the shoulder and hip. It suits back and stomach sleepers better, or side sleepers who add a soft topper.
How firm is it compared with other Serta mattresses?
It is one of Serta's firmest foam models. If you want cushioning, look at the brand's plush or pillow-top lines instead.
Does it need a box spring?
No. A 12.5-inch foam mattress works on a platform bed, slatted frame or adjustable base. A box spring is optional and mainly raises the height.
What is the price history for the king size?
Only one new price is listed: $619.99 at Mattress Firm as of November 8, 2026. There is no earlier price on record to compare it with.
Is the king size worth it over the queen?
The king gives each sleeper more width, which matters for couples. If the room is tight, the queen is the same build for less money.
What is in the box?
It is sold as a mattress only. A foundation, frame and bedding are separate purchases.
Where is the Serta Classic Blissville Firm Mattress 12.5" King cheapest?
At Mattress Firm, for $619.99, as of our latest check.

Stores we've priced the Serta Classic Blissville Firm Mattress 12.5" King at

  • Mattress Firm deals and prices

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