Very, very comfortable. Only used for a few months, and it has been protected by a bedding protector. Comes with the box spring and frame. Price is as listed or best offer. 

Features
SurfaceCool Fiber
2 Layers of AirCool Foam
GelTouch Foam
Ventilated
Hypo Allergenic

The good night's sleep that you get with the Simmons Beautyrest Recharge Signature Select Hartfield Luxury Firm Mattress is legendary. With a combination of AirCool and Gel Foams, this mattress gently contours to the curves of your body giving you conforming back support for a cool comfortable sleep. The AirCool Foam features an open celled comfort material designed to increase comfort and help regulate body temperature. It is completely surrounded with ventilated, High Density BeautyEdge, and foam encased with QuantumLock that provides a solid edge for seating. This mattress is finely tuned to provide recharging sleep to ensure you get your beauty rest every night. 

Dimensions
Queen - 60 W x 80 D