Feels great feels firm not hard.  I like a little softer my husband likes firm. We had a 10 inch memory foam bed for seven years and it was time to get a new mattress. Decided to wait and try a topper pad. We also ordered a gel filled mattress cover for added umph. Maybe I can get a little cushion without my husband noticing. Only problem is it is 2 inches wider. I trimmed off over an inch and perfect. Expanded to 4 inches right away and did not notice any odor.