Hello there Edelgado, Thanks for selecting Next Working day Flyers to your printing requirements. We've got lots of cardstocks for flyers. Evidently, we would not have a watertight substance although We've h2o-resistant cardstock. Click on the dimensions below to obtain a ZIP file that contains templates for that size in https://beaudrfre.liberty-blog.com/32171448/the-2-minute-rule-for-flyer-printing