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The 12-Inch Medium-Firm Mattress In a Box is constructed with ultra-supportive material that is sure to provide a restful night's sleep for the user. Constructed with high-density fire-retardant foam, this mattress conforms to the user's body and has extra cushioning to cradle the back, neck, and shoulders in comfort. This medium-firm mattress minimizes pressure points and alleviates back pain for the user. The individually wrapped springs reduce sleep interruptions attributed to motion transfer. Pocket springs allow for airflow through the mattress, which creates a cooler sleeping surface. This mattress is the ideal blend of comfort, support, and durability.
This product is non-returnable due to: Per Manufacturers Return Policy.
Note: This product is for sale in the United States only and is ineligible for International Shipping.

Product Specifications / Dimensions

Specifiction LabelSpecification Value
Twin Size Dimensions 39W x 75D x 12H in.
Full Size Dimensions 54.25W x 75.5D x 12H in.
Queen Size Dimensions 60W x 80D x 12H in.
King Size Dimensions 75.5W x 81D x 12H in.
Product Weight 55 lbs.
Weight Capacity 1100 lbs.
Firmness Medium-Firm
Color White
Padding High Density Foam Padding
Springs 10 in. Pocket Spring Coils; 6.5 in. Gauge Springs
Ships Compressed and shipped in a box
Recommended Please allow 2 to 5 days for mattress to fully expand
Designed For Platform Beds and Trundles
CAL 117 Certified Yes
ANSI BIFMA Certified Yes
Returns 35% restocking fee, damages, and unopened products only

Buying Options:

Choose Size of Comfortable Sleep Mattress

Twin - Comfortable Sleep 12 Inch Foam and Pocket Spring MattressTwin - Comfortable Sleep 12 Inch Foam and Pocket Spring Mattress
$290.00
sku: FSH-CL-E230P-R-T-GG
Full - Comfortable Sleep 12 Inch Foam and Pocket Spring MattressFull - Comfortable Sleep 12 Inch Foam and Pocket Spring Mattress
$370.00
sku: FSH-CL-E230P-R-F-GG
Queen - Comfortable Sleep 12 Inch Foam and Pocket Spring MattressQueen - Comfortable Sleep 12 Inch Foam and Pocket Spring Mattress
$399.00
sku: FSH-CL-E230P-R-Q-GG
King - Comfortable Sleep 12 Inch Foam and Pocket Spring MattressKing - Comfortable Sleep 12 Inch Foam and Pocket Spring Mattress
$592.84
sku: FSH-CL-E230P-R-K-GG

More Information

The 12-Inch Medium-Firm Mattress In a Box allows users to sleep comfortably in a neutral position, which places less stress on muscles and reduces pressure points and body aches. Wake up refreshed after a good night's sleep on this mattress, which features high-quality interior construction that includes both pocket spring coils and fire-retardant foam. The individually wrapped springs act independently of each other, so they don't transfer motion across the mattress. This minimizes sleep interruptions and contributes to a better quality of rest. The pocket springs also allow air to flow through the mattress, which creates a cooler sleeping surface. This body-conforming mattress cradles the user in comfort, and its high-density foam construction provides extra cushioning to benefit the back, neck, and shoulders.

The 12-Inch Medium-Firm Mattress In a Box delivers a convenient online shopping experience along with a good night's sleep. When unwrapped from the plastic, the mattress will return to its original shape in 2 to 5 days. The convenient integrated handles make it easy to move, and it does require a foundation or box spring with the use of a standard frame. The twin-size mattress is also compatible with trundle beds and platform beds. It is designed not only for comfort but for durability. The top-quality construction found in the comfortable 12-inch foam and pocket spring mattress ensures its long-term value.

Mattress in a Box: Flash Furniture 12-Inch Medium-Firm Spring (Twin, Full, Queen, King) Picture

*The bed frame is NOT included. 

What Customers Are Saying:

"I've had this mattress for 2 weeks before I wrote this review to ensure my review was accurate. If you like medium-firm mattresses, this mattress is perfect for you. I added my memory foam topper to it and now it feels like I sleep on a soft, bouncy cloud. Overall this is a fantastic budget mattress, and I have not experienced a single issue with it so far. - Chelsea R."

"I'm a larger woman and was worried about buying a mattress before trying it. This is the first mattress I have purchased myself and this was definitely the right decision. It has been a month and I have had no issues. I love it! - Cassondra P."

"Buy this mattress! I am a very picky shopper and I went through all the reviews and after a lot of debate, I purchased it. It has been fantastic. I have allergies but this mattress has proven to not be an issue. Buy this mattress instead of a big box mattress, it's so much easier to deal with. - Tonya L."


FAQ For Mattress in a Box: Flash Furniture 12-Inch Medium-Firm Spring (Twin, Full, Queen, King)

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Can I use this mattress as soon as I open it?
Answer: You can technically use this mattress when you open it, but it is highly recommended to let it sit for 2-5 days in order for it to regain its original shape.
Is there formaldehyde in the mattress?
Answer: There is no formaldehyde in this mattress.
I need a king-size mattress, would it be reasonable to get two twin mattresses so that I don't wind up with a soft spot in the middle of the king mattress?
Answer: This would not make a difference. Although it is a good idea, the mattress in king size is phenomenal and will not form a soft spot in the middle.

Mattress in a Box: Flash Furniture 12-Inch Medium-Firm Spring (Twin, Full, Queen, King) Pictures:

Mattress in a Box: Flash Furniture 12-Inch Medium-Firm Spring (Twin, Full, Queen, King)
Mattress in a Box: Flash Furniture 12-Inch Medium-Firm Spring (Twin, Full, Queen, King)
Mattress shown on bed (bed frame not included)
Mattress shown on bed (bed frame not included)
The mattress ships compressed in a box
The mattress ships compressed in a box
Handles on the sides of the mattress
Handles on the sides of the mattress
Side view of mattress
Side view of mattress
Back of mattress
Back of mattress
Twin mattress dimensions
Twin mattress dimensions
Full mattress dimensions
Full mattress dimensions
Queen mattress dimensions
Queen mattress dimensions
King mattress dimensions
King mattress dimensions