The frame is made of polystyrene with feather top.
This model is available both in fabric and leather upholstery.
This model in leather is available with following options for the stitching thread: thick thread with short length of stitches in same color as leather, thick thread with long stitches and same color as leather and thick contrast color of the thread to the leather and long stitches. This model is available also with a special leather edge sewing under name SPECIAL.