My local guy is giving away a Cuesta Rey duffel bag with the purchase of any box of Cuesta Rey. As you can see the side pockets will hold a bag of Killer Beans each, and the water bottel bag will hold a 750 ml bottle. For reference the main storage part will hold the big Case Logic CD case with a little room to spare on the side. On the back side there is a thin velcro pouch that looks to be big enough to hold a couple CA mags.