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. Different car makers achieve this in different ways, but here is the most common method: The seat is made with more porous material than traditional car seats, which are made to allow air to flow through them.
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).