I ordered the twin size, and it is heavy! Being a relatively strong old lady, I managed to unpackage it and then pulled it up onto my bed platform. But if you have someone that can help you set it up, that would be good.
Slept on it last night. It took a little getting used to, since I've been sleeping on a thin futon, with no cushion at all. I'm a side sleeper and got tired of my hip hurting and arms falling asleep, which is why I ordered this TKO mattress. Had a good sleep last night, and woke up this morning feeling so cozy, I didn't want to get out of bed!