Abstract: An assembly includes an elastic protection sleeve (211); two tubular cores (212, 212?) for holding the sleeve (211) expanded; for each tubular core (212, 212?), a slide film (213, 213?) placed between the sleeve (211) and the each core (212, 212?), to enable each core to slide relative to the sleeve; and a device (30) for holding the two cores (212, 212?) in order for them to be able to move apart from each other, from the initial state in which they are end to end, until they are apart at most by a predetermined distance at which the inside diameter of the sleeve (211) between the first ends (217, 217?) is at least similar to the inside diameter of the cores (212, 212?), whereby the assembly (210A) with the two cores (212, 212?) thus apart can still be repositioned.

Abstract: A kit including a sleeve; a tubular core for stretching the sleeve, tightly covered by the sleeve and adapted to receive internally an elongate member; and a thin and flexible sliding element disposed between the sleeve and the core to enable the core to slide relative to the sleeve. The sliding element makes a half-turn over a first end of the core so as thereafter to be disposed inside the core in order to be able to be pulled from the second end of the core. The sliding element includes a net formed of flexible filaments with at least one layer of filaments connected to each other in a predetermined arrangement. The filaments are adapted to slide on the outside surface of the core and to turn back on themselves around the first end of the core.

Abstract: A kit includes: a sleeve (11); a tubular core (12) for stretching the sleeve, tightly covered by the sleeve and adapted to receive internally an elongate member (30); and a thin and flexible sliding element disposed between the sleeve and the core to enable the core to slide relative to the sleeve, which sliding element makes a half-turn over a first end (17) of the core so as thereafter to be disposed inside the core in order to be able to be pulled from the second end (18) of the core; wherein the sliding element includes a net (13) formed of flexible filaments (21, 23) with at least one layer (22) of filaments (23) connected to each other in a predetermined arrangement, which filaments are adapted to slide on the outside surface of the core and to turn back on themselves around the first end of the core.