Sign Again is the very first sheet material made entirely from used banners and cutting waste. Many printing materials are thrown away after long or short use. Almost all materials that are recyclable are not actually recycled, simply because those options do not exist. The Sign Again movement aims to change that.

To make Sign Again, Probo processes factory waste and used prints into new sheet material for printing. This way, print remains affordable and available and they are not dependent on increasingly scarce raw materials. The goal is to no longer purchase and sell print once, but rather to bring it into a loop and keep it that way.​