Hi there Edelgado, Thanks for choosing Upcoming Day Flyers for your printing needs. We have lots of cardstocks for flyers. Seemingly, we do not need a watertight materials although We've drinking water-resistant cardstock. Click the dimensions down below to download a ZIP file made up of templates for that sizing https://griffinrgpit.ezblogz.com/63769186/the-2-minute-rule-for-flyer-printing