The box for this was absolutely mangled when it arrived. Thankfully, the next layer of packaging was sufficient. We followed the directions and let this decompress for 48 hours. The mattress is a full 13.5 inches and incredibly comfortable! I opened the mattress in a room I had just finished painting, so I’m not sure if I smelled paint or the mattress, but after 48 hours, all odor had dissipated.