After we put this under mattress, we needed a stepstool to get up so this was not even used - immediately removed it, gave us a good laugh after we took pictures of it and us next to bed, and it's sat in the hallway the last 2-3 weeks.
This made our bed too tall so we are selling as opposed to returning.
$175 firm
We do have a FULL mattress too. Medium firm for $180