Abstract: A protection and storage bag includes a main opening configured to be closed by rolling up, the opening defining an opening perimeter. The bag further includes a flexible or hinged anti-theft member having a first free end, a central part linked to a portion of the opening perimeter and a second free end, the two free ends of the anti-theft member being configured to cooperate with a locking system in order to lock the anti-theft member in a closed position; an anti-rotation system configured to prevent any relative rotation between the anti-theft member and the portion of the opening perimeter; and an anti-turn system for preventing the anti-theft member from being turned by twisting when the bag is closed by rolling up and locked by the locking system.

Abstract: The invention relates to a protective helmet comprising a plurality of segments, at least two of said segments (106, 107) being connected together by way of a sliding connection for sliding purposes, said segments connected by said connection having complementary and approximately parallel indentations and protrusions, characterized in that, for each sliding connection, said protrusions of at least one of the segments are connected together by way of a transverse bar.

Abstract: The invention relates to a protective helmet comprising a plurality of segments, at least two of said segments (106, 107) being connected together by way of a sliding connection for sliding purposes, said segments connected by said connection having complementary and approximately parallel indentations and protrusions, characterised in that, for each sliding connection, said protrusions of at least one of the segments are connected together by way of a transverse bar.