This twin mattress is very comfortable. It was purchased to upgrade my toddler’s room as she has outgrown her toddler crib. So this is her first “big girl” mattressbed. It feels very firm and sturdy yet soft to the touch. The rest of of the mattresses in our home have spring coils, this is the first time we tried foam and it feels awesome! Great hybrid option. Mattress came vacuum packed and it took about 24 hours to reach full form but instructions advise about 48 hours. Also there was no weird smell. I might look into buying mattresses with foam for the other rooms in our home when the time comes. It’s only been a few days but it is holding up very well so far. My daughter loves it! Hopefully this lasts for years to come especially with a mattress protector. I would definitely recommend, especially for a kids bed. Happy Shopping!