This mattress went from my worst nightmare to the best thing I've ever slept on in 72 hours. The manufacturer states that you may sleep on the mattress the first night after opening. DO NOT DO SO! About 12 hours after unwrapping, we laid down to the worst nights sleep of my life. Back spasms and and knots the size of baseballs; I was miserable! The bed was way way way too soft and I wanted nothing more than to throw it out the window. BUT after heeding the advice of my mother, I decided to wait the suggested 72 hours for full inflation and give it another go. Man, was she right! This mattress, although still very soft, is firm in the right places and keeps you cool throughout the night. I would not recommend it to someone needing a firm mattress, but if you want to feel like you're being cradled by pillowy soft clouds, this one's for you! Seriously, the tension relief is unbelievable. I close my eyes at night and wake fully refreshed; I don't even remember me dreams. If you are looking for a the ultimate luxury plush mattress, don't hesitate!