Hey unhappysleeper,
All mattresses need to be used on a properly supportive bed base to maintain their quality overtime. Foam products can soften with time but any softening should be very minimal and gradual. We stand behind the quality of our products and back this mattress with a 10-year warranty against any manufacturer issues or unusual wear in the material. For the return, please contact Home Depot directly. If there is anything we can do, please let us know at info@lucidmattress.com
Thank you!
Lucid. Beds for the Whole Family.