This is a special edition firm mattress that offers optimum support as well as a cooling effect, brought by its patented Aircool technology. It also comes with good suspension as the foam has added layers as well as a Transflexion core and mesh boarders that deliver durability. The edge of this bed is sturdy and stable that saggging even as you sit on the edges is not going to take place. The mattress also comes with a stretch knit fabric covers, so that the bed feels smooth to sleep on.
You can get this from Crate & Barrell.