Ive never been so happy to see the FedEx delivery truck! My mattress topper arrived and popped up nicely after opening and laying it out. Sure, there was a slight "chemical" smell, if you shoved your nose into the topper. My topper is is under a waterproof mattress pad, so I don't smell a thing. This is a great  topper for the 
price.  Choose the 2 inch topper if your bed just needs some extra cushion. Choose the 3 inch option if you have a super firm mattress that needs a lot more softness. I really think you will enjoy this topper!