This mattress width seems smaller than an average queen mattress. The topper isn't the full width of the mattress, creating a sloping effect on the edges that causes one to feel like one might roll off the bed. Additionally, the mattress is very tall, so now my bed is undesirably high. The boxspring that came in the set seems bigger than a half-height as well. I will probably sell this mattress and replace it with something else. Overall, a disappointment. Lesson learned to not buy mattresses online.