Zinus Night Therapy 12" iCoil Premium Firm Full Mattress and BiFold Box Spring Set

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Product Description:

Night Therapy’s 12” iCoil mattress features a premium coil system that relieves pressure and provides firm support so you wake up feeling refreshed.

Product Details:

  • 12" firm support mattress with comfort layer for plushness
  • Infused with green tea, charcoal and natural plant oil
  • Compressed, rolled and shipped directly to your door
  • Set includes 9" steel-framed BiFold box spring


Give yourself a comfortable night of sleep with the Zinus Night Therapy 12” iCoil Premium. This King box spring mattress set is made with a premium coil system to help relieve pressure on your body while giving you firm support while you sleep. It can help you sleep longer and feel more refreshed when you wake up. The set comes with a mattress and box spring. The mattress has a 12” thickness while the king-size box spring is 9” thick and made with a steel frame.

The 9" BiFold Box Spring is an innovative folding mattress foundation designed for mobility and functionality. Traditional box springs are hard to maneuver through your home, especially upstairs and through doorways, but the BiFold Box Spring is easy to use in tight places. Tougher than it looks, it offers the look and functionality of a traditional box spring but made from heavy-gauge steel for longer-lasting durability. No assembly required, simply open the box, slide the foundation out and unfold, it will immediately open to the shape of a box spring.

What is the Zinus Night Therapy 12” iCoil Premium?

The 12” iCoil Firm Mattress has an innovative design to help you enjoy a night of peaceful and comfortable sleep. It’s built to provide you with extra-firm support that helps relieve pressure from your back, which is essential for a good night of rest. Comforting foam layers and iCoil Springs come together to create a unique sleep solution that’s specially made to help you get a better night of sleep and feel refreshed when you wake up the next morning. 

What Are the Features of the Zinus Night Therapy 12” iCoil Premium?

The king box spring mattress set has a base layer of 7.5” thickness made from steel iCoil springs with a support layer of 2” of high-density foam. Another 2” of foam forms a comfort layer on the top. The foam used in the set is certified by CertiPUR-US for its content, durability and performance. The mattress is infused with natural plant oil, charcoal and green tea extracts for an extra layer of comfort. The King size box spring is easy to fold, store and move. It has the design of a traditional box spring, complete with a fabric cover and heavy steel gauge frame that doesn’t need to be assembled for use.

Does the Zinus Night Therapy 12” iCoil Premium Come with a Warranty?

The Zinus bed frame mattress is backed by a 10-year limited warranty while the spring base comes with a 5-year limited warranty.

About Zinus

Zinus was founded in 1979 as a company dealing in outdoor products. Its focus was on tents and furniture that offered comfort. It was in 2003 that Zinus shifted its focus to indoor products that would address the consumers’ need for comfort. Zinus now specializes in mattress foundations and mattresses.

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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