The Louisiana Purchase stretched from the Mississippi River to the beginning of the Rocky Mountains. Official boundaries were not determined, except that the eastern border ran from the source of the Mississippi River north to the 31 degrees north.
Cooled (or air conditioned) seats work by confining cooled air directly in the seat where the passenger is seated. Multiple fans are put within the seat to provide air circulation. The air from the fans blows through a diffusion layer to spread the cool air throughout the seating material, cooling the whole surface.
1 Backrest provides support for your lower back (lumbar area). 2  Seat width and depth accommodate the specific user (seat pan not too big/small). 3  Seat front does not press against the back of your knees and lower legs (seat pan not too long). 4  Seat has cushioning and is rounded with a waterfall front (no sharp edge).