This is the classic bookbinding adhesive. I’ve used it for as long as I’ve been making books (35 years!), and it is my true go-to glue. It’s water-based, non-toxic, and fairly quick-drying. And acid free. We’ve packaged the P.V.A. in two sizes of air-tight glass jars: Glue Beaucoup is 12 oz; Glue Junior is 6 oz. We’ve labeled them accordingly, so they will look cool in your igloo.