Very disappointed.  The product description was a misrepresentation. 18" mattress turned out to be 8" with 8" box spring,  which is totally different than the description. 
After waiting 10 days plus scheduling delivery and awaiting the 4-hour delivery window, I have a mattress that did not meet its description. 
I've been working with customer service for almost a week,  without a resolution. 
I've been told that the mattress was only to be 10" deep and the box spring made up the other 8". Again,  not how it was advertised.  Nor is the mattress 10" deep,  as shown in pictures. 
Now, I'll have to wait at least another 10 days for a replacement, then schedule delivery and wait another 4 hour window. 
Beyond disappointed in the misrepresentation and customer service to fix this issue in a reasonable amount of time.