Mesh enough to see through without being see through enough to know what you got inside. Kind of like your childhood jansport but a lot different. Simple and straightforward while being anything but simple or straightforward. The mesh is durable too so don't get worried about this being fragile like your feelings.
100% polyester mesh, nylon straps, paracord pull tab, silicon iggy label, matte black vislon zippers, three separate storage compartments, interior pencil / accessory divider, a bunch of other stuff.