There was a gap in time between when my mattress came, and when my base came. I thought my base was coming sooner and so I had my old mattress set hauled out. When the base didn't come but the mattress had I ended up sleeping on the mattress on the floor and it was amazing but I wasn't sure if I actually needed the base. When the bass did come, I was glad that I got it. It has lumbar support, which is amazing. I don't really understand the vibration, but other than that it is wonderful and even tracks my sleep. it's pricey, but worth the money.