Very very comfortable but my only complaint is that we purchased 2 for a bunk bed that called for a 5” thick mattress. In the description it explained no bunky board or anything needed underneath the mattress. I followed that and wish I would’ve either picked a thicker mattress or maybe not memory foam as you can feel every bunk bed slat underneath the mattress and if you kneel in the right place the mattress will sink between slats.