Like others before me, when I recieved this gel topper it was all rolled up tightly in a plastic bag. Upon unrolling the topper, it appeared to be very thin and unlikely to provide much comfort. Wow, looks can be deceiving! I unrolled my topper on my covered back porch to allow it to breathe as instructed, then promptly forgot about it for 3 days. When I remembered, I was surprised at how puffy it had gotten, and it smelled so fresh from being out in the air. The first night rest on this new topper, gave me just that ... a great nights rest and peaceful dreams, on a formerly uncomfortable mattress.