Car seat

A car seat is the seat used in automobiles. Most car seats are made from inexpensive but durable material in order to withstand prolonged use. The most common material is polyester.

A bucket seat is a separate seat with a contoured platform designed to accommodate one person, distinct from a bench seat that is a flat platform designed to seat up to three people. Individual bucket seats typically have rounded backs and may offer a variety of adjustments to fit different passengers.

Early touring cars featured folding auxiliary seats to offer additional passenger capacity.

Some sedan models offer rear seats (e.g. Chevrolet Corvair), to gain cargo space when they are not occupied by passengers.

A fold-down front-passenger seat was a feature on the Chrysler PT Cruiser to fit longer items such as a 8-foot (2.4 m) ladder inside the vehicle.

The lumbar is the region of the spine between the diaphragm and the pelvis; it supports the most weight and is the most flexible. The adjustable lumbar mechanisms in seats allow the user to change the seat back shape in this region, to make it more comfortable and include adjustable lumbar cushion. Some seats are long enough to support full thigh and follow back curves.

The National Traffic and Motor Vehicle Safety Act enacted by the U.S. in 1966 established standards of strength for automobile seats. These included requirements for proper anchorage and construction of automobile vehicle seat assemblies. The legal requirements in some jurisdictions for a child to sit up front is 5'0 and they must weigh more than 80 lbs. Some studies have shown that drivers have an aversion towards carrying the full capacity amount of passengers due to concerns over insufficient vision through the back window.

Some car seat systems are set up with a battery-powered automatic control to adjust how the seat sits in the car.

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