I’ve grown out of my "Tactical"phase and I just don’t carry this to work anymore. It’s a hazard4 sidewinder black briefcase pack. I carried it for years as a commuter briefcase both on trips and biking to work and it is Very Very well designed. It's a sling bag with a heavy duty clip. It’s medium sized and can act as a small piece of luggage and I’ve used it for that before. It has all of the black molle gear that I think has every been produced in the history of nylon covering it at every point (kidding). The outside pocket contains a billion more pockets including ones sized for ammo clips. There is a padded laptop sleeve that also doubles as a hydration bladder and Velcro for patches and hazard 4 has optional Velcro things that go in that pocket. The inside has several pockets and mesh storage areas. Here are the details from Hazard 4 External Size ~18" L x 11" W x 6.2" D (46 x 28 x 16 cm) Main Compartment ~17.7" L x 10.5" W x 6" D (45 x 27 x 15.5 cm) Laptop Compartment ~17.4" L x 10.5" W x 0.8" D (44 x 27 x 2 cm) Total Gear Capacity ~18.3 L (1,115 cubic inches) Product Weight ~2.4 lbs I have used it a lot but all zippers work.