The shelter has flexible cover elements (3) fixed at a frame that is provided with tubular vertical posts (1). A tubular truss (2) is carried by the vertical posts, and receives the flexible cover elements, where each section of each flexible cover element is fixed to the frame. A longitudinal rigid element (30) is equipped at a fixing border. The frame is equipped with a fixing section (32). An elongated rigid element (31) is blocked against a lower face of a retention tab (33) under effect of tension from a cover section.
