Child safety seat with adjustable head restraint

A side-protective head restraint pad, pad assembly and safety seat. The restraint pad (60) includes an air bladder (62) with a pump (65) for selectively inflating the air bladder (60) and a release valve (66) for selectively deflating the air bladder (60), an energy-absorbing component (63A,63B) and a comfort component (64A,64B). A flexible enclosure is provided within which the air bladder, energy-absorbing component and comfort component are positioned in overlaid configuration to define a unit. The head restraint pad is adapted for being placed in a seat in lateral alignment with one side of the head of an occupant and inflatable or deflatable as appropriate to restrain the head against injurious lateral movement caused by a side impact relative to the seat.