The tactical backpack is with multi-functional space and military modularization design, which can let you add some M series with any equipment or an extended system. There're two easy-took and arranged vice bags in the front of main bag and a water bottle pocket on the right side.The pocket is with an adjustable buckle, suitable for a variety of the size of the kettle. The left side of the positive also set up a grocery bag, which can let you put the MP3, digital cameras, PDA and so on.