WOW !
This mattress is INCREDIBLY well made.  It is FIRM.  I dont know what people are talking about saying its not firm. 
I am very very PLEASED With the quality and firmness of this mattress.  As I am getting older I need a firmer mattress.  This has a 100 day return policy. So how can you go wrong . Although in one of the reviews someone stated that it was like 165.00 to return it . That was my only apprehension about purchasing this mattress. 
But I really think this will NOT be returned. 
The price for a mattress of this quality is great .
Thank you Wayfair