Seasoned beech and poplar solid wood.

Springing: steel Greek springs tied manually.
Padding: different density foam polyurethane.

Padding: different density foam polyurethane.

Seat and backrest: sterilized natural goose down, with stabilizing insert of foam polyurethane.

Walnut (light, medium, dark), cherry wood or wengè painted.

Top-grain leather, first choice
Full grain genuine leather
Full grain leather shiny look
Aniline leather
Nubuk leather
Fabric (removable)