Race official competitor numbers basic tyvek bib numbers - set of 1,000, 1 to 1000 - industry standard tyvek tear proof and water proof Tyvek race bib competitor numbers - economy basic set of 1,000, 8"x3.5", numbers 1 to 1,000- tyvek tear proof and water proof 8 inches by 3.5 inches, hole in each corner see my other lisitngs for custom numbers or 100 packs printed on white tyvek: tear proof and water proof paper