Arrived quickly, and inflated to near full size within two hours, I slept on it the first night no problem. Extremely mild odor, which disappeared within a day or two. This mattress is very comfortable, but takes some getting used to if you've never slept on a memory foam mattress before. You sink in a bit after a few seconds, and if you tend to toss and turn at night, it feels a little like rolling out of a small depression. Not a huge issue, but noticable. Also, it tends to retain heat, so I find myself not using blankets much, a sheet is more than enough most of the time. I read the reviews before buying this, and saw that some people complained that it was too firm, so I got a pillowtopper from Overstock as well. Seems to have done the trick. At 12 inches this is a fairly thick mattress, so you may end up higher than you want to. I will be replacing my boxspring with a low profile model shortly.