Bought Sonno queen, came in a long narrow box
Mattress inside rolled out and fully inflate after 24 hrs can use
Tried for a month, found the latex retained my heat after 30mim cannot sleep properly even w aircond.

Submitted return request, after some paperwork and chasing 3rd party transporter, they lorried it back (fully inflated).

Hope you didnt get a 2nd hand returned mattress after someone tried it after inflation.