to hold a child in the event of a crash. All 50 states require child seats with specific criteria. Requirements vary based on a child's age, weight and height. The National Child Passenger Safety Board, managed by the National Safety Council, maintains the quality and integrity of the National Child Passenger Safety Certification Training Program. The program is used to train and certify child passenger safety technicians and instructors in order to assist caregivers in safe transportation of children. Side airbags are often built right into the outer edge of the seatback. Seats so equipped should not be covered which impedes the operation of the airbag. Power seats 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.). Covers Car seat covers are accessories that protect the original seat upholstery from wear and add a custom look to a vehicle's interior. They can help to maintain the resale value of the vehicle and maximize the comfort of the driver and passengers. Seat construction Parts Armrest Backrest, with lumbar support Headrest Seat base Seat track Adjustments 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 Cushion Tilt Climate control and ventilation Some vehicles includes the option of seat climate control (i.e. heating by seat warmers or cooling) and ventilation. Ventilation was introduced in 1997 by Saab and heating by Cadillac in 1966. See also Armrest Cushion Ergonomics Folding seat Headrest List of chairs Lumbar Massage chair Seat belt Sedentary lifestyle Sheepskin seat cover Turning seat Upholstery References Seats Auto parts