Search  for anything...

Premium 12 Inch King Mattress - Black Diamond Quilted, Individual Pocket Spring & Memory Foam Top, Cooling & Pressure Relief, Bed in a Box

  • Based on 19 reviews
Condition: New
Checking for the best price...
$249.99 Why this price?
Save $30.00 was $279.99

Buy Now, Pay Later


As low as $41.67 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund / replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon

Arrives May 1 – May 2
Order within 6 hours and 31 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Color: Black


Size: King


Style: 12 Inch


Features

  • Diamond Quilted Design: Mattress surface features sophisticated diamond-pattern stitching enhancing comfort and durability
  • Hybrid Construction: Combines individual pocket springs with memory foam top layer for optimal support and pressure relief
  • Temperature Regulation: Advanced cooling technology helps maintain comfortable sleep temperature throughout the night
  • Height Profile: 12-inch profile provides substantial support with structured edges for enhanced durability
  • Weight Distribution: Quilted surface technology helps distribute body weight evenly for improved sleep quality

Brand: QOFYU


Size: King


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


Item Weight: 50 Pounds


Item Firmness Description: Plush


Top Style: Plush Top


Cover Material: Quilted Diamond Pattern


Number of Layers: 3.0


Fill Material: Memory Foam


Weight Limit: 1000 Pounds


Item Firmness Description: Plush


Number of Layers: 3.0


Weight Capacity Maximum: 1000 Pounds


Additional Features: Durable


Mattress Coil Type: Pocketed Coil


Construction Type: Hybrid


Is Customizable?: No


Size: King


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


Item Weight: 50 Pounds


Item Thickness: 12 Inches


Item Dimensions: 80 x 60 x 12 inches


Item Depth: 12 inches


Cover Material: Quilted Diamond Pattern


Fill Material: Memory Foam


Mattress Comfort Layer Material: Memory foam


Material Type: Gel Foam


Brand Name: QOFYU


Model Name: 009


Product Benefits: Pressure Relief, Motion Isolation, Edge Support


Model Number: 009


Mattress Type: Standard Mattress


Manufacturer: QOFYU


Manufacturer Part Number: Qf-mat-001


Included Components: mattress


Age Range Description: Adult,Kid


top-style: Plush Top


Color: Black


Style Name: 12 Inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 1 – May 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great value
Color: Black Size: Full Style: 12 Inch
My son loves it, very comfortable and not firm which is what ha wanted, thickness is great I would say a great price and good quality. It expanded quickly.
Reviewed in the United States on April 2, 2026 by tattedchik92

  • Sciatic back pain? Stop here and grab this
Color: Black Size: King Style: 12 Inch
This purchase was fantastic. It’s firm yet comfortable, exactly what I needed. There’s no noise, and it’s of good quality. I decided to let mine expand for about three days in a spare room before using it. I didn’t know I had to do that, but since it was vacuum-sealed, I figured I’d do it on my own.
Reviewed in the United States on March 13, 2026 by Kadejia Graham

  • Soft
Color: Black Size: Full Style: 12 Inch
Everything great just a little to soft for me
Reviewed in the United States on April 6, 2026 by A

  • Don't waste your money
Color: Black Size: Full Style: 12 Inch
Terrible. Just terrible. There is no support and the bed just sinks when I lay down on it. It sinks dramatically when my 50lb dog lays on it. I can feel the springs, it's as if there's no memory foam at all. Difficult to even return because you have to box it back up and good luck try to compress it enough to fit. ... show more
Reviewed in the United States on March 16, 2026 by RaeRVT85

  • Worth every penny!!!!
Color: Black Size: Full Style: 12 Inch
Wow bought this for my daughter since she completely outgrew her twin sized bed my ONLY complaint is I can't get this in a king!!! Super comfortable and that says A LOT since I'm terrified of buying mattresses with any form of springs. It instantly expanded for only a 12 inch she's thick!! WELL worth the money for such an amazing quality! ... show more
Reviewed in the United States on April 2, 2026 by Nathan Hernandez

  • Love the look!
Color: Black Size: King Style: 12 Inch
Nice looking mattress. I would say it’s about a medium firmness. I like that it’s black, so you don’t see all the stains on the mattress. Grandkids, love to spill bottles and cups, when sleeping on my bed…lol
Reviewed in the United States on March 5, 2026 by Amazon Customer

  • Perfect size and support!
Color: Black Size: King Style: 12 Inch
Perfect size for my husband and I! Extremely comfortable despite the reviews! Not too soft and not too firm either, it provides the perfect support we wanted. Was just perfect! Color also added another great touch to it!
Reviewed in the United States on April 20, 2026 by Christine Brown

  • Decent quality mattress for the price
Color: Black Size: Full Style: 12 Inch
not as firm as I would like. Decent quality mattress for the price. Needs a bit more support.
Reviewed in the United States on April 7, 2026 by Lauren

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...