“Thousands of bags in this world, yet none can take care of my papers”. Designers love sketching, either in their notebooks or on papers. What would a bag designed to hold papers to eliminate the need of envelopes, cardboard paper boxes, etc. look like? When I was in senior year, I noticed a lot of freshers carry papers (for sketching practice) in extra accesories, often struggling to maintain balance or keep things well managed. A4 bag was a 1 week personal project done in 2015 to provide young designers and students a simpler way of carrying their loose papers.