The flag book structure is credited to Heidi Kyle, a world renowned book artist. The spine of the book is an accordion fold. "Flags" of various materials and sizes are attached to opposite sides of the folds, creating a wonderfully movable, sculptural piece.

The glassine envelopes in this flexible, sculptural book are just the right size for holding business cards, but it can hold ticket stubs, stamps, small photos, or other mementos as well. An elastic closure keeps everything together. Thirty envelopes.