Just got mattress looks well made. Feels soft to touch. It expanded quickly by I left it for 48 hours before using it. Very little odor.  
Update. This is a good mattress but it turned out to be just too FIRM for me. Mayfair customer service was excellent and handled the return without any problems. 
I felt I would really like this mattress but could not sleep on it the first night. It felt like middle of my body was higher than head and feet. Hips and shoulder were very sore. It felt way too FIRM for a medium mattress. I am 200 lbs. I was used to an extra firm 8 inch foa mattress and thought this should be softer. I was wrong. I will try with a mattress toppe for a while. But if it does not get better soon I will have to return it for a more suitable one. I will update my review with results