Inflatable structure comprised of a flexible envelope (1q), characterized in that it comprises a rigid core (2q) flat or shaped on at least of a portion of the surface thereof.

The semi-rigid portion links the first rigid portion with the second rigid portion.

Inflatable structure comprised of a flexible envelope (1q), characterized in that it comprises a rigid core (2q) flat or shaped on at least of a portion of the surface thereof.

The prosthesis may be rigid or semi-rigid.

The gate member is rigid or semi-rigid.

The housing may be rigid, semi-rigid, or flexible.

The helmet body is one of rigid and semi-rigid.

The container is at least one of flexible, rigid, or semi-rigid.

A semi-rigid head for a bone screw comprising includes a first rigid portion, a second rigid portion, and a semi-rigid portion.

The hardtop includes a rigid panel and a frame.

The composite material may be rigid, semi-rigid or flexible.

The saucer-shaped sole element is a self-supporting, thin rigid to semi-rigid structure which on its lower side has contact and cushioning elements which function as outsole.

The optical article includes a first rigid optical substrate, a second rigid optical substrate, and a self-supporting optical adhesive disposed between the first rigid substrate and the second rigid substrate.

The container can be rigid, deformably rigid, or a combination of both.

The second elongate element (200) may also be rigid or semi-rigid.