Hi there Edelgado, Thank you for selecting Future Working day Flyers for the printing requires. We've a wide variety of cardstocks for flyers. Evidently, we do not have a water-proof materials though we have drinking water-resistant cardstock. The dimensions of the A5 bit of paper is five.eighty three x eight.27 https://brookscmaqg.blogsuperapp.com/32585308/detailed-notes-on-flyer-printing