This invention is about a flexible light protection structure, that can be used as a knee pad, ankle support, thigh support, etc.. This invention is also the base structure for the construction of helmets, chest protectors or even protective gloves, that are usually required when practicing sports in general. The structure of the present invention is very light and flexible and has a great capacity for absorbing shocks without translating them. This invention relates to a mesh (2) conformed by interwoven helical straps (1). The mesh (2) is folded onto itself defining at least one internal cavity where ribs (5,6,7,8) are housed for rigidity purposes. The mesh (2) can be made of any material such as plastic, artificial fibers or metal. The inclusion of rigid reinforcing rods (12,13,14,15) intercalated with the helical straps (1) is also provided.