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Avenco SleepSphere 12 Inch King Size Mattress

Avenco SleepSphere 12 Inch King Size Mattress

Best price now

$233.99at AmazonObserved Nov 3, 2026, 10:47 AM

Prices are checked against each store and labelled with when.

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Our take on the Avenco SleepSphere 12 Inch King Size Mattress

The Avenco SleepSphere is a 12-inch hybrid king mattress that pairs individually wrapped Smart Coils with a breathable 3D knitted cover and reinforced edge support. It is CertiPUR-US certified and ships compressed, so it is a budget-friendly option for a guest room or a first apartment. At $233.99 at Amazon as of November 4, 2026, it sits at the low end of what a king hybrid typically costs. Only one store currently lists it new, so there is no price competition to shop around.

Best forBudget buyers who need a king sizeGuest rooms and rentals
Back and combination sleepers
Shoppers who want a hybrid without a high price
Pros
  • Individually wrapped coils limit motion transfer
  • Reinforced edge support keeps the sides firmer
  • Breathable 3D knitted cover
  • CertiPUR-US certified foams
  • King size for under $250
Cons
  • Only one store lists it new, so no price comparison
  • 103.7 lbs is heavy to move and rotate
  • No published firmness rating or trial period details
  • Thin brand support network compared with major mattress names

Avenco SleepSphere 12 Inch King Size Mattress prices at every store

  • AmazonNew

    Availability unknown

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    $233.99Free shippingObserved Nov 3, 2026, 10:47 AM
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Avenco SleepSphere 12 Inch King Size Mattress price history

Lowest price we've seen: $233.99 on Nov 3 at Amazon. Tracked across 1 store since Nov 3.

Specifications

Thickness
12 InchSource
Size
KingSource
Item dimensions
79.9 × 11.2 × 11.2 inSource
Weight
103.71 lbsSource
Package weight
103.71 lbSource
Cover fabric
Breathable 3D knitted fabric coverSource
Edge support
Reinforced 3D edge supportSource
Coil type
Individually wrapped Smart CoilsSource
Certification
CertiPUR-US CertifiedSource
Color
WhiteSource
Brand
AvencoSource

Questions and answers

Is the Avenco SleepSphere 12-inch mattress worth it?
At $233.99 for a king, it is one of the cheapest hybrid kings available. It suits a guest room or a tight budget more than a long-term daily sleeper who wants a known firmness and warranty.
How firm is the SleepSphere?
Avenco does not publish a firmness rating for this model. The coil-and-foam build with reinforced edges generally reads as medium firm, but try it before committing if firmness matters to you.
Does it need a box spring?
No. A hybrid with coils works on a platform bed, slatted frame or adjustable base. A box spring is optional and mainly adds height.
How long does it take to expand after unboxing?
Compressed mattresses of this type usually reach most of their height within 24 to 48 hours. The 12-inch profile may take a bit longer in a cold room.
Is the cover removable and washable?
The 3D knitted cover is breathable but Avenco does not list it as removable for machine washing. Use a mattress protector for easy cleaning.
When is the best time to buy it?
Mattress prices drop around major sales events and long weekends. With only one store listing it, watch that listing for markdowns rather than comparing across stores.
Where is the Avenco SleepSphere 12 Inch King Size Mattress cheapest?
At Amazon, for $233.99, as of our latest check.

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