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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. Some seats are long enough to support full thigh.
A child restraint system, also commonly referred to as a child safety seat or a car seat, is a restraint which is secured to the seat of an automobile equipped with safety harnesses or seat belts, to hold a child in the event of a crash.
This kind of seat incorporates specially shaped panels in the forward edge of the seat cushion, reducing the tendency for the occupant to slide beneath the seatbelt in a severe frontal collision. Anti-submarine seating is a safety feature which may be more important for the front seats than the rear seats.
Bucket seat and bench seat
A bucket seat is a seat with a contoured platform to accommodate one person, distinct from a bench seat which is a flat platform designed to seat up to three people. Bucket seats are standard in fast cars to keep riders in place when making sharp or quick turns.
Some car seat systems are set up with a battery-powered automatic control to adjust how the seat sits in the car.
In suitably equipped cars, seats and mirrors can be adjusted using electric controls. Some vehicles let the driver(s) save the adjustments in memory (memory seat) for later recall, with the push of a button. Most systems allow users to store more than one set of adjustments. This allows multiple drivers to store their comfort settings, or a single driver to store several different occupant positions. Some vehicles associate memorized settings with a specifically numbered, remotely operated key fob, resetting a seat to the position associated with that fob when the vehicle is unlocked (e.g. key fob #1 sets seats to memory position #1, #2 to #2, etc.).
- Backrest angle
- Cushion edge
- Fore-and-aft position
- Headrest angle
- Headrest level
- Lumbar position
- Seat depth
- Seat height
- The upper section of the seat backrest, may be tilted to the front for optimum, individual shoulder support
- Variable head support at the sides
Climate control and ventilation
Backseats and fold-down
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