In this video you can see the construction of the Manager A5 size Van der Spek organizer compared to other brands.

See the original video here.
Youtube Channel: Philofaxy

Organizer Details
Type: Custom Made Organizer
Size: Manager A5
Outside Leather Color: 6202 Cioccolate
Inside Leather Color: 6208 Cuoio
35mm Rings
Stiffener Bontex