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.
All current Graco car seats and high back boosters have been tested to this standard. 2X Car Seat Standard â Graco has developed a structural test for all of our car seats that simulates a collision with twice the force of current federal standards for testing car seats. Children should ride rear-facing in a car seat up to two years old. 2  Children should sit in a booster seat until they are 4â9â. 3  For more information on the new recommendations, visit www.AAP.org.