Abstract: An orthosis (10) for correcting deformities in the head shape of babies and young children includes a mesh layer (20). The mesh layer (30) includes regions of varying stiffness in the mesh layer that are adapted to apply varying pressure to a wearer's head, so as to restrict undesirable growth and allow desired growth to correct the deformities. Accordingly, the mesh layer (30) provides a layer of uniform thickness but variable stiffness, so that a lightweight means of applying appropriate pressure to the wearer's head is provided. The mesh layer (30) can be manufacturer by 3D printing, based on a scan of the wearer's head.