Arrived compressed and rolled in box.. I followed instructions and let it regain its full shape by letting it hang out in the guestroom for a day and a night, and another day.. Very comfortable, no more pressure pain in shoulders or hips from side sleeping. It IS warm though, so I am going to change out my winter flannel sheets to summer sheets to see if that makes a difference. Would definitely buy again... I use the Sydnie Memory Foam Mattress Pad from WF to keep it clean and safe under my fitted sheets.