I have been a professional artist/Illustrator for over 25 years now and also a bag nut always on the lookout for new ways to carry gear for on site sketching and painting. I came accross this medic backpack on Ebay for $60 bucks plus $10 shipping.I ended up finding it at a webstore called Safety Kings http://www.safetykings.com/arsenal-5243-emt-backpack-trauma-bag/#.UiR_pCqbtRM and got it cheaper $60 delivered. Decent straps and a cell holder included. I like the teardrop shape. The zippers are not YKK but seem strong. The back compartment opens on an angle so the bag wont tip over when unzipped. Also makes retrieving items easy Inside there is many storage options. Mesh pockets,elastics for pens , lights,and 6 deep pockets. A removeable padded insert would be for delicate items or camera . This is what made me buy it. A large mesh pocket on the outside with compression straps I'm going to carry my tripod here for my easel. finally this is a pic from the site showing its real use as you can see plenty of storage options. The buckles are generic but it feels like 500d cordura stitching is bartacked and for 60 bucks how could I go wrong.It will be covered in paint in know time for my use.