Storage system for a foldable chair

The system (1) has a seat (18) that is mounted on a pivot (17) and slides along the pivot for being positioned in two different positions. A rear (19) of the pivot is folded on seating to allow revolving movement of the seat. . A recovering device (3) provides a gliding surface and selective unfolding of the seat for altering additional arrangement volume. The device has a chute that is connected to and rigidifies the system.