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Avenco

Avenco SleepSphere King Size Mattress 12 Inch in a Box, Hybrid Medium Plush

  • Based on 237 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Oct 31
Order within 11 hours and 49 minutes
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Size: King (U.S. Standard)


Set name: 12 Inch


Features

  • Strong Support with SmartS Coil Mattress with SmartS Coil springs adapts to your body, promotes spinal alignment, eases pressure points, and delivers reliable comfort for all sleep positions.
  • Plush Euro Top Comfort Hybrid mattress with Euro Top design combines sturdy support and soft cushioning for a cloud-like feel, offering the perfect balance of comfort and firmness for deeper sleep.
  • Cool & Breathable Cover AirBreeze fabric promotes airflow, regulates temperature, and creates a breathable, hypoallergenic surface, keeping you cool, dry, and fresh throughout the night.
  • Reinforced Edge Support Strong edge support prevents sagging, offers stable seating, and maximizes usable sleep space. Ideal for couples or individuals who need the full surface without roll-off.
  • Easy Setup & 100-Night Trial Mattress arrives vacuum-packed in a compact box for easy setup. Simply unbox, allow 4872 hours to fully expand, and enjoy a risk-free 100-night trial at home.

Brand: Avenco


Size: King (U.S. Standard)


Product Dimensions: 80"L x 76"W x 12"Th


Item Weight: 66 pounds


Item Firmness Description: Medium Plush


Top Style: Euro Top


Cover Material: AirBreeze Fabric


Number of Layers: 2


Fill Material: Foam, Spring


Special Feature: Breathable, Durable, Hypoallergenic, Pressure Relief


Item Firmness Description: Medium Plush


Number of Layers: 2


Additional Features: Breathable, Durable, Hypoallergenic, Pressure Relief


Mattress Coil Type: Pocketed Coil


Construction Type: Hybrid


Size: King (U.S. Standard)


Item Dimensions L x W x Thickness: 80"L x 76"W x 12"Th


Item Weight: 66 pounds


Item Thickness: 12 inches


Item Depth: 12 inches


Item Dimensions: 80 x 76 x 12 inches


Cover Material: AirBreeze Fabric


Fill Material: Foam, Spring


Mattress Comfort Layer Material: Comfort Foam, Cotton


Material Type: AirBreeze Fabric, Foam, Spring


top-style: Euro Top


Color: White


Style Name: 12 Inch


Brand Name: Avenco


Model Name: Mattress


Product Benefits: Hypoallergenic, Improves Sleep, Pressure Relief, Stress Relief


Model Number: B-M02905


Number of Items: 1


Mattress Type: Standard Mattress


Number of Packs: 1


Global Trade Identification Number: 94


Manufacturer: PT Prestova Home Living Indonesia


Item Highlight: Individual Pocket Spring, SmartS Coil Tech, Euro Top, Motion Isolation, Pressure Relief, CertiPUR-US


Included Components: mattress*1


Item Type Name: Bed Mattress Conventional


Manufacturer Part Number: B-M02905


Set Name: 12 Inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 31

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Comfortable and Supportive Mattress for the Price
Size: King (U.S. Standard) Set name: 12 Inch
I’ve been sleeping on this mattress for a little while now and overall I’m really happy with it. It came compressed in a box, but after letting it expand, it filled out nicely. The firmness is probably my favorite part. It’s not too soft and not too hard. It feels supportive underneath but still has a comfortable, softer top. I’ve been waking up feeling much better than I did with my old mattress. I also like that movement doesn’t transfer too much. When my husband turns over or gets out of bed, I don’t feel the whole mattress shaking. There was a slight new mattress smell at first, but it went away after airing it out. For the price, I think the quality is very good. It feels comfortable, supportive, and more expensive than I expected. So far I’m very satisfied with it. ... show more
Reviewed in the United States on September 2, 2026 by Penny
    • Great price for a good mattress
Size: King (U.S. Standard) Set name: 12 Inch
Great price for a good mattress. We got the 12 inch king size hybrid medium plush mattress and, so far, so good! Obviously for this price you cannot expect a Cadillac of a mattress but it has surprised us so far. It is the first one in years that I wake up without back pain. I agree with the other reviews that the ends sink when you sit on them but it has been great where we sleep on it (and we use it as our primary mattress). We felt it was spot on with the firmness. ... show more
Reviewed in the United States on August 29, 2026 by Groot
    • Good quality for price
Size: Full Set name: 12 Inch
Great quality for the price. The bed is firm and not soft so if you are looking for a firm mattress this is perfect. I put a mattress topper on it and it feels great. I highly recommend to anyone who wants a quality bed for a good price.
Reviewed in the United States on September 17, 2026 by Hannah Gorman
    • Not medium, definitely a firmer mattress, uncomfortable
Size: Full Set name: 10 Inch
Mattress was nice however description to me was way off. Was not medium or plush, feels more like a firm mattress and not a fan of memory foam. So hard to find one that isn’t these days. One night to test it and back was out however husband absolutely loves it so had to put it in the man cave guest room rather than other guest room I had purchased for now stuck buying another mattress. Disappointing if you are looking for a comfortable sleep, great if you don’t mind sleeping on a board. ... show more
Reviewed in the United States on September 28, 2026 by KAB
    • Twin Bed
Size: Twin Set name: 8 inch
Decent twin bed was comfortable
Reviewed in the United States on August 31, 2026 by Dwayne
    • Worth for the price
Size: King (U.S. Standard) Set name: 12 Inch
Review Image by Jiaqi Chen
The mattress is better than I thought. It looks normal but it’s not too soft neither too hard. It’s just perfect to me. My 2 year-old son also sleeps on this mattress with us. Overall it’s worth for the money.
Reviewed in the United States on September 20, 2026 by Jiaqi Chen
    • AVOID at all costs!
Size: King (U.S. Standard) Set name: 12 Inch
Save your money. Do NOT buy this mattress if you’re a light sleeper (side sleeper) hard as a rock. Can feel and hear springs under a half inch of “memory foam”. Waste of time and money. Poor description of what it truly is once received. Most uncomfortable mattress I’ve ever owned. Sand is more comfortable than this. Can’t return it because how in the world will I ever be able to pick it up much less transport it somewhere. Very upset I wasted hard earned money on this item. ... show more
Reviewed in the United States on October 3, 2026 by Jessi wild
    • Sleeps great awesome value 😀
Size: Queen (U.S. Standard) Set name: 12 inch
This mattress is a keeper and a great value for the price. I really needed a mattress that didn't need a box spring to sleep on. I was grateful Amazon offered 3 payment plan options I was able to pay monthly.
Reviewed in the United States on September 23, 2026 by Ms. T

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