In a former life, I hosted cycling events. I recently found a stash of leftover bib numbers and decided they'd be better suited as book covers than in the basura. Tyvek is actually an excellent material for pocket books - waterproof, tear-resitant and bleedproof. 

The bib numbers are mounted to 100lb French Paper card stock and filled with ~60 pages of bright white paper. 


Bib Number Pocketbooks


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