I painted my backpack and messenger bag (contains all my art supplies) while waiting to leave for Greece. I bought the backpack many years ago when I lived in London and I still use it regularly when I travel. The Timbuk2 messenger bag was a recent purchase and it has a good amount of internal compartments to hold my art supplies and the overall construction seems sturdy. I only have two complaints about this bag. First, the trim on the flap tends to stick to the velco and fray and second, the two water bottle holders on the sides of the bag are a little loose around the bottles I use. A good art supply bag is hard find because most are so poorly made, but overall the Timbuk2 bag is well made so I would recommend it. Lastly, my wide brim hat comes in handy when I’m drawing without a shade tree.