In the box item, the size is TWIN.
https://www.wayfair.com/bed-bath/pdx/wayfair-sleep-105-medium-hybrid-mattress-w002332776.html
In the box item, the size is TWIN.
https://www.wayfair.com/bed-bath/pdx/wayfair-sleep-105-medium-hybrid-mattress-w002332776.html