This is a 3rd generation, tear proof, heavy weight, nylon bag that comfortably stores 15 cans upright. However, more cans are possible. You can store your caps in a reliable easy to find place with the discretely located inner zip-up pocket. The outer open pocket also allows for black books, sketches or markers to be neatly tucked away yet easily accessible. The final touches are two small recognizable dangerous goods logo’s printed on one exterior side of the otherwise all black bag.