Apex 65 Booster Seat

booster seat
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.
(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 extra seat or cushion placed on an existing seat for a small child to sit on

apex
Reach a high point or climax
vertex: the highest point (of something); "at the peak of the pyramid"
Apex (altitude physiology expeditions) is a high altitude medical research charity. It is based in Edinburgh, Scotland and was founded in 2000. It has conducted two high altitude research expeditions to the Chacaltaya high altitude laboratory, in Bolivia.
the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars

65
The Singapore telephone numbering plan, also known as the National Numbering Plan, is regulated by the Numbering Management Department of the Infocomm Development Authority of Singapore (IDA), taking over the role from the Telecommunications Authority of Singapore upon its formation in December
Year 65 (LXV) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.
sixty-five: being five more than sixty