Abstract: A child safety seat can be used as an auxiliary seat in an automobile and a stroller. The child safety seat has front and rear caster arms which are rotatably provided in a seat structure. The front and rear caster arms selectively extend downward from and retract above the lowermost portion of the seat structure. The child safety seat can be attached to the automobile seat when the front and rear caster arms retract.

Abstract: An automobile roof carrier of the invention is mainly composed of a magnetic base portion, a gripping portion for removal, a covering member and a loading article holding portion. The covering member is integrally jointed over the magnetic base portion while the magnetic base portion is covered by the covering member except in the attractive surface of the magnetic base portion and the gripping portion for removal. Combined integrally in the upper part of the covering member is a loading article holding portion which is able to be opened and closed. A supplementary cover which is able to be opened and closed is attached to the covering member so that the gripping portion for removal may be hidden and exposed. There is provided a first locking mechanism for maintaining the closed state of the supplementary cover, whereas there is provided a second locking mechanism for maintaining the closed state of the loading article holding portion.