The front flap features a large pocket lined with 200 denier nylon Dyneema® ripstop fabric (a tough, impossible-to-tear fabric) and closed by a #8 YKK Splash-Proof zipper. It's the perfect pocket for storing items you'll need quick access to, such as plane tickets or your passport.

On both sides of the ID are pockets designed to securely carry portable electronic devices such as cell phones, iPods/MP3 players or PDAs. Lined with Ultrasuede® and closed by #8 YKK® splash-proof Uretech® zippers, these snug pockets also provide scratch-free storage for eyewear. Both pockets feature a tiny opening at the beginning of the zipper for your iPod/MP3 earbuds cord to feed through without getting scrunched. The right side (looking at the bag facing you) of the ID features an exterior water bottle or umbrella pocket that can be cinched down with compression straps if not in use.

Under the front flap of the ID, you'll find a #8 YKK® zippered pocket, and behind the front section of the bag, an open-top pouch with five organizer pockets sized perfectly for pens, your laptop power supply, and other small accessories. Three small plastic rings inside the bag offer a place to secure the key snap that will keep you from losing your keys, and give you extra spots to secure Tom Bihn Organizer Pouches (optional; order here) to the bag.

The main compartment of the ID is wide, open, and offers easy access to your stuff. You'll have room for a couple of books, a light sweater or jacket, a notebook, magazines, and lunch, in addition to typical accessories (pens, cell phone, iPod/MP3 player, small digital camera, toiletries, wallet, checkbook, keys, etc.). If you'd like extra pockets inside the main compartment, or would like a way to keep files and folders neat and organized, consider the Horizontal Freudian Slip.

Should you choose to use the ID as a laptop messenger bag, the main compartment features removable Annex clips designed to securely connect our Brain Cell hard-sided laptop case inside the bag. The Brain Cell is available in eight different sizes and provides the ultimate in laptop protection with soft, thick foam padding, hard, corrugated plastic walls, and a suspension system. We recommend using our Laptop Bag Fit Guide to determine which size of Brain Cell is right for your laptop.

The back of the ID is foam-stiffened to protect you from feeling the stuff you put in the main compartment. The back features an open flat back pocket perfect for even the thickest of magazines or newspapers, and a removable waist strap for extra stability when you're on your bike (motor or push). For added visibility when using the ID while on your bike, we offer the Cat Eye™ reflector which can be attached to the front of the bag. Though the ID is designed to be used as a messenger bag with a shoulder strap, we've added a comfortable grab handle on the back top of the bag that allows you to carry it like a briefcase.

You can choose between three different shoulder straps to use on your ID bag. The Standard Shoulder Strap, included in the price of the ID bag, is a 1-1/2" wide heavy nylon webbing strap and features a comfortable, wide foam pad that won't slip off your shoulder and is designed to conform to your shoulder and back. For an extra $15.00, you can switch out the Standard Shoulder Strap and replace it with the Q-AM (Quick-Adjust Messenger) Shoulder Strap. For an extra $20.00, you can switch out the Standard Shoulder Strap and replace it with the Absolute Shoulder Strap. For more detailed information on the three straps, click here.. Most people will be satisfied with just one kind of shoulder strap, but, should you choose to do so, you can purchase more than one kind of shoulder strap and switch between them.

The exterior of the ID is made of 1050 denier ballistic nylon (not the fake 1680 denier pseudo-ballistic nylon common on lesser products) and is lined with 500 denier Cordura® nylon.