Booster Seat With Harness

booster seat
(Booster Seats) Booster seats are not permitted in any Spaceships vehicle.
(Booster Seats) Are intended to be used as a transition to lap and shoulder belts by older children who have outgrown convertible seats (over 40 pounds). They are available in high backs, for use in vehicles with low seat backs or no head restraints, and no-back; booster bases only.
An infant safety seat, also known as a child safety seat, a child restraint system, a restraint car seat, or ambiguously just as a car seat, is a restraint which is secured to the seat of an automobile equipped with safety harnesses to hold an infant or small stature people in the event of a crash.
An extra seat or cushion placed on an existing seat for a small child to sit on

harness
Put a harness on (a horse or other draft animal)
put a harness; "harness the horse"
Attach a draft animal to (something) by a harness
exploit the power of; "harness natural forces and resources"
Control and make use of (natural resources), esp. to produce energy
a support consisting of an arrangement of straps for holding something to the body (especially one supporting a person suspended from a parachute)