This is a half thick full mattress...only two years old. The brand is Brentwood. Our cat is sick and he peed on my son's bed. Luckily we had a mattress protector on it but while washing it, the cat came back and peed straight on the mattress. He has diabetes and drinks a lot and pees a lot so luckily the scent isn't strong. We cleaned it and aren't able to smell any pee but are worried that he will want to pee on it again so if you have a use for this...then we wanted to offer it up before throwing it away.