how long does it take for the odor to dissipate after opening?

I opened it up at 1 PM and slept on it at 10 PM. I smelled no odor.

What are the dimensions of the sofa, not the mattress?

Listing is for sofa mattress only. Sofa is not included.

Is this only the mattress or it comes with the sofa?

It does not fit up into the older sofa beds. Those with original mattress size of 66” wide by 68” long.

what is the width of the mattress. Can it accomodate 2 people?

72 inches long by 53 inches wide by 4.5 inches deep. Similar to a full size bed mattress. If the people are small they would be okay, but a queen or king size mattress would be more accommodating for two people.

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DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa

DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa

Product ID: 21837967

Details

Brand
Cover Material
Cotton
Fill Material
Gel Memory
Item Firmness Description
Firm
Item Weight
20 pounds
Number of Layers
2

📦compressed & rolled delivery

❄️cool gel memory foam

🛏️4-inch dual-layer foam

Description

🛋️ Upgrade your sofa bed game—comfort that folds out like royalty!

STAY COOL ALL NIGHT LONG - Innovative gel-infused memory foam promotes airflow, ensuring you never wake up overheated on your sleeper sofa.
HYGIENIC EASY TO MAINTAIN - Includes a washable zipper cover, making cleanup simple and keeping your mattress fresh and inviting.
CLOUD LIKE COMFORT IN 4 INCHES - Experience premium support with a 2-inch gel memory foam layer paired with a 2-inch high-density foam base for pressure relief and durability.
EFFORTLESS SETUP PORTABILITY - Ships compressed and rolled for easy delivery and quick expansion—ready to use within hours, no hassle involved.
VERSATILE FIT FOR MODERN LIVING - Designed to fit most standard queen-size sleeper sofas, plus perfect for guest rooms, RVs, campers, and boats.

The DynastyMattress 4-inch Cool Gel Memory Foam Mattress is a queen-size, dual-layer mattress topper designed specifically for convertible folding sofas and couch beds. Featuring a breathable gel-infused memory foam layer atop a supportive foam base, it delivers firm yet pressure-relieving comfort while maintaining a cool sleep surface. The mattress ships compressed and rolled for convenient delivery and expands fully within hours. Its washable cover ensures easy maintenance, making it a versatile, affordable upgrade for any sleeper sofa, guest room, or mobile living space.

Specifications

ASIN	B00HK58W8U
Additional Features	Foldable, Orthopedic, Pressure Relief, Washable Cover
Age Range Description	Adult
Best Sellers Rank	#1,311,148 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #2,992 in Mattresses & Box Springs
Brand Name	DynastyMattress
Color	White
Construction Type	Memory Foam
Cover Material	Cotton
Customer Reviews	4.3 4.3 out of 5 stars (4,742)
Fill Material	Gel Memory Foam
Global Trade Identification Number	00788490140146
Item Depth	4 inches
Item Dimensions	72 x 58 x 4 inches
Item Dimensions L x W x Thickness	72"L x 4"W x 58"Th
Item Firmness Description	Firm
Item Thickness	4 inches
Item Type Name	Sofa Bed
Item Weight	20 pounds
Manufacturer	DynastyMattress
Manufacturer Part Number	1PC 4.0" QUEEN GEL SOFA,
Manufacturer Warranty Description	5 year limited warranty.
Material Type	Memory Foam
Mattress Base Compatibility	Platform Base, Slatted Base, Sofa Bed
Mattress Comfort Layer Material	Gel Memory Foam
Model Name	Cool Gel Memory Foam Mattress
Model Number	KM-4.5QN-GEL-SOFA
Number of Items	1
Number of Layers	2
Number of Packs	1
Product Benefits	Enjoy deeper sleep and relaxation
Product Care Instructions	Machine Wash
Set Name	Queen
Shape	Rectangular
Size	Queen
Style Name	4-Inch
UPC	788490140146
Unit Count	1 Count
Weight Capacity Maximum	600 pounds
top-style	Gel Top

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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The product exactly matches the description. Very satisfied with my purchase.

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