Really comfortable mattress! It arrived rolled as a small package and delivery was on time! I left it to rest for 24hours but was probably ready to go before that. Only thing was the gas-type smell of the mattress - I haven’t purchased a mattress in a long time so was surprised but it appears to be common in new mattress. The smell lingered for a couple of days so had to keep good ventilation in my room. I would describe it as a medium-firm mattress but you do feel like you sink into a bit. But very very comfortable!