I ordered this mattress topper on Tuesday and by 5pm Friday it was at my door. Extremely quick and thrilled that the shipping was *** on top of it. I followed the instructions and let the topper unfold on its own and do it thing. It says is may take up to 24 hours to unfold all the way but mine took only about 30 - 40 minutes. This was in March in Michigan. Cold! It has a slight foamy factory smell to it but I expected that. I had a 1 inch topper in the past that smelled the same and it went away after a couple days. Its extremely comfy and I am so excited to sleep on it tonight. The quality is just what I expected and the service and shipping was great. I was so happy to find this mattress topper on Overstock. All of the other 4 inch toppers I had looked at only had 2 inches of memory foam and 2 inches of high density foam. Nice to pay a decent price for all 4 inches of memory foam! Couldn't be happier! Highly recommended.