Postural system, comprising: - a flat base plate; - a plurality of modular blocks (20a - 20f, 30a - 30d, 40a - 40f, 50a - 50e, 80a - 80b), different in shape and size, suitable for being coupled to said base plate in order to obtain a supporting structure shaped so as to fit the morphological structure of said user, said base plate being provided with coupling means for removable and reversible coupling with an external supporting surface and with said modular blocks, and said modular blocks (20a - 20f, 30a - 30d, 40a - 40f, 50a - 50e, 80a - 80b) being provided with means for removable and reversible coupling with said base plate and with one another, said postural system comprising a first plurality of modular blocks (20a - 20f) suitable for obtaining a modular base, characterized in that said postural system further comprises: a second plurality of modular blocks (30a - 30d) suitable for obtaining a modular system for accommodating the legs of said user; and a third plurality of modular blocks (40a - 40f) suitable for obtaining a modular system for accommodating the pelvis of said user, wherein said third plurality of modular blocks (40a - 40f) are independently coupled to one another and to said base plate and they are shaped and arranged so as to achieve correct containment, suspension and anterior, lateral and posterior control of the user's pelvis as well as correct containment, suspension and control of the coccyx, sacral vertebrae, lumbar vertebrae and thoracic vertebrae. - a flat base plate; - a plurality of modular blocks (20a - 20f, 30a - 30d, 40a - 40f, 50a - 50e, 80a - 80b), different in shape and size, suitable for being coupled to said base plate in order to obtain a supporting structure shaped so as to fit the morphological structure of said user, said base plate being provided with coupling means for removable and reversible coupling with an external supporting surface and with said modular blocks, and said modular blocks (20a - 20f, 30a - 30d, 40a - 40f, 50a - 50e, 80a - 80b) being provided with means for removable and reversible coupling with said base plate and with one another, said postural system comprising a first plurality of modular blocks (20a - 20f) suitable for obtaining a modular base, characterized in that said postural system further comprises: a second plurality of modular blocks (30a - 30d) suitable for obtaining a modular system for accommodating the legs of said user; and a third plurality of modular blocks (40a - 40f) suitable for obtaining a modular system for accommodating the pelvis of said user, wherein said third plurality of modular blocks (40a - 40f) are independently coupled to one another and to said base plate and they are shaped and arranged so as to achieve correct containment, suspension and anterior, lateral and posterior control of the user's pelvis as well as correct containment, suspension and control of the coccyx, sacral vertebrae, lumbar vertebrae and thoracic vertebrae. a second plurality of modular blocks (30a - 30d) suitable for obtaining a modular system for accommodating the legs of said user; and a third plurality of modular blocks (40a - 40f) suitable for obtaining a modular system for accommodating the pelvis of said user, wherein said third plurality of modular blocks (40a - 40f) are independently coupled to one another and to said base plate and they are shaped and arranged so as to achieve correct containment, suspension and anterior, lateral and posterior control of the user's pelvis as well as correct containment, suspension and control of the coccyx, sacral vertebrae, lumbar vertebrae and thoracic vertebrae.