Timbuk2 Lightbrite Classic Messenger Bag Lightweight coated waterproof nylon with water-tight flap construction. Reflective racing stripe keeps you visible during nighttime rides. Memory-adjust cam buckle eliminates daily fit adjustments. Just unclick the cam, put the bag over your shoulder, and lock the cam back in for a perfect fit every time. Napoleon side entry pocket allows you to grab your cash and keys without opening the messenger flap. Zipper closure keeps your goods safe. Hallelujah! Internal slash pocket against the back wall of the bag provides a padded, firm place for you to store files and laptops, with or without the case.