Duet Bifold

Thickness where it closes, thinness where it stacks.

A bifold gets bulky where four layers meet, so the Duet skives every interior panel to 0.7 mm before the spine is stitched. The result closes at 9 millimeters with eight cards loaded. Full thickness stays on the exterior, where patina and structure belong.

• Interior panels skived to 0.7 mm for a 9 mm closed profile
• 1.4 mm full-grain exterior, saddle-stitched spine
• 4-pass hand-burnished edges
• 72 g